Q JEE MAIN_2026

A 30 cm long solenoid has 10 turns per cm and area of $5 \mathrm{~cm}^2$. The current through the solenoid...

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A square loop of side 2 cm is placed in a time varying magnetic field with magnitude as $...

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An inductor of inductance 10 mH having resistance of $100 \Omega$ is connected to battery of E.M.F. 1.0 V through...

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Q JEE MAIN_2026

A metal rod of length $L$ rotates about one end at origin with a uniform angular velocity $\omega$. The magnetic...

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Q JEE MAIN_2026

A circular current loop of radius $R$ is placed inside square loop of side length $L(L ? R)$ such that...

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Q JEE MAIN_2026

When a coil is placed in a time dependent magnetic field the power dissipated in it is $P$. The number...

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Q JEE MAIN 2026

A simple pendulum made of mass 10 g and a metallic wire of length 10 cm is suspended vertically in...

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Q JEE MAIN 2026

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2026

A 20 m long uniform copper wire held horizontally is allowed to fall under the gravity ( $...

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Q JEE MAIN 2026

Suppose a long solenoid of 100 cm length, radius 2 cm having 500 turns per unit length, carries a current...

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A circular loop of radius 7 cm is placed in uniform magnetic field of 0.2 T directed perpendicular to plane...

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Q JEE MAIN 2026

Inductance of a coil with $10^4$ turns is 10 mH and it is connected to a dc source of 10...

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Q JEE MAIN 2026

Three identical coils $C_1, C_2$ and $C_3$ are closely placed such that they share a common axis. $C_2$ is exactly...

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Q JEE MAIN 2026

A conducting circular loop is rotated about its diameter at a constant angular speed of 100rad / s in a...

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Q JEE MAIN 2026

Figure shows the circuit that contains three resistances ( $9 \Omega$ each) and two inductors ( 4 mH each). The...

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Q JEE MAIN 2026

XPQY is a vertical smooth long loop having a total resistance R where PX is parallel to QY and separation...

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Q JEE MAIN 2026

An aluminium and steel rods having same lengths and cross-sections are joined to make total length of 120 cm at...

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Q JEE MAIN 2026

A capacitor C is first charged fully with potential difference of V0 and disconnected from the battery. The charged capacitor...

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Q JEE MAIN 2026

A current carrying solenoid is placed vertically and a particle of mass $m$ with charge $Q$ is released from rest....

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Q JEE MAIN 2026

A conducting circular loop of area $1.0 \mathrm{~m}^2$ mmmmm is placed perpendicular to a magnetic field which varies as $...

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Q JEE MAIN 2020

A circular coil of radius 10 cm is placed in a uniform magnetic field of $3.0 \times 10^{-5} \mathrm{~T}$ with...

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Q JEE MAIN 2020

A wire carrying current I is bent in the shape ABCDEFA as shown, where rectangle ABCDA and ADEFA are perpendicular...

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Q JEE-MAIN 2019

As shown in the figure, two infinitely long, identical wires are bent by $90^{\circ}$ and placed in such a way...

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Q JEE MAIN 2020

Two concentric circular coils, $C_1$ and $C_2$ are placed in the XY plane. $\mathrm{C}_1$ has 500 turns, and a radius...

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Q JEE MAIN 2020

One of the two identical conducting wires of length $L$ is bent in the form of a circular loop and...

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Q JEE MAIN 2020

A square loop of side 2a, and carrying current I, is kept in XZ plane with its centre at origin....

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Q JEE MAIN 2019

Consider the LR circuit shown in the figure. If the switch $S$ is closed at $t=0$ then the amount of...

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Q JEE MAIN 2019

A 10 m long horizontal wire extends from North East to South West. It is falling with a speed of...

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Q JEE MAIN 2020

A long straight wire of radius a carries a current distributed uniformly over its crosssection. The ratio of the magnetic...

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Q JEE MAIN 2020

An electron is constrained to move along the $y$-axis with a speed of 0.1 c ( c is the speed...

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Q JEE MAIN 2019

In an experiment, electrons are accelerated, from rest, by applying a voltage of 500 V . Calculate the radius of...

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Q JEE MAIN 2019

There are two long co-axial solenoids of same length I . The inner and outer coils have radii $\mathrm{r}_1$ and...

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Q JEE MAIN 2020

At time t = 0 magnetic field of 1000 Gauss is passing perpendicularly through the area defined by the closed...

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Q JEE MAIN 2019

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m. If...

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Q JEE MAIN 2019

The magnitude of the magnetic field at the center of an equilateral triangular loop of side 1 m which is...

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Q JEE MAIN 2019

A coil of self inductance 10 mH and resistance $0.1 \Omega$ is connected through a switch to a battery of...

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Q JEE Main 2019

An insulating, thin rod of length I has a linear charge density $\rho(x)=\rho_0 \frac{x}{I}$ on it. The rod is rotated...

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Q JEE Main 2019

A solid metal cube of edge length 2 cm is moving in a positive y-direction at a constant speed of...

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Q JEE MAIN 2020

A small bar magnet is moved through a coil at constant speed from one end to the other. Which of...

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Q JEE MAIN 2019

A copper wire is wound on a wooden frame, whose shape is that of an equilateral triangle. If the linear...

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Q JEE MAIN 2020

A series L-R circuit is connected to a battery of emf $V$. If the circuit is switched on at $t=0$,...

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Q JEE MAIN 2020

A circular coil has moment of inertia $0.8 \mathrm{~kg} \mathrm{~m}^2$ around any diameter and is carrying current to produce a...

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Q JEE MAIN 2019

The total number of turns and cross-section area in a solenoid is fixed. However, its length L is varied by...

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Q JEE-MAIN 2020

A uniform magnetic field $B$ exists in a direction perpendicular to the plane of a square loop made of a...

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Q JEE MAIN 2019

A rectangular coil (Dimension 5 cm × 2.5 cm) with 100 turns, carrying a current of 3 A in the...

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Q JEE MAIN 2020

As shown in the figure, a battery of emf $E$ is connected to an inductor $L$ and resistance $R$ in...

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Q JEE MAIN 2019

A very long solenoid of radius $R$ is carrying current $I(t)=k t e^{-\alpha t}(k>0)$, as a function of time $...

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Q JEE MAIN 2019

Two coils ' $P$ ' and ' $Q$ ' are separated by some distance. When a current of $3 A$...

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Q JEE MAIN 2020

A LCR circuit behaves like a damped harmonic oscillator. Comparing it with a physical springmass damped oscillator having damping constant...

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Q JEE MAIN 2020

A long solenoid of radius $R$ carries a time $(t)$ dependent current $\mathrm{I}(\mathrm{t})=\operatorname{lot}(1-\mathrm{t})$. A ring of radius $2 R$ is...

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Q JEE MAIN 2021

A coil is placed in a magnetic field B as shown below :

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Q JEE MAIN 2019

The self induced emf of a coil is 25 volts. When the current in it is changed at uniform rate...

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Q JEE MAIN 2021

A coil is placed in a magnetic field B as shown below :

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Q JEE MAIN 2019

A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their...

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Q JEE-MAIN 2021

A constant magnetic field of 1 T is applied in the x > 0 region. A metallic circular ring of...

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Q JEE MAIN 2019

A thin strip 10 cm long is on a U shaped wire of negligible resistance and it is connected to...

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Q JEE MAIN 2019

A 20 Henry inductor coil is connected to a 10 ohm resistance in series as shown in figure. The time...

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Q JEE-MAIN 2021

A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed...

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Q JEE MAIN 2021

In the given figure the magnetic flux through the loop increases according to the relation $\varphi_{\mathrm{B}}(\mathrm{t})=10 \mathrm{t}^2+20 \mathrm{t}$, where $\varphi_{\mathrm{B}}$...

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Q JEE MAIN 2021

An inductor coil stores 64 J of magnetic field energy and dissipates energy at the rate of 640 W when...

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Q JEE-MAIN 2021

The temperature of an ideal gas in 3-dimensions is 300 K. The corresponding de-Broglie wavelength of the electron approximately at...

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Q JEE-MAIN 2021

A square loop of side 20 cm and resistance 1Ω is moved towards right with a constant speed v0. The...

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Q JEE-MAIN 2021

The value of aluminium susceptibility is $2.2 \times 10^{-5}$. The percentage increase in the magnetic field if space within a...

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Q JEE-MAIN 2021

A circular conducting coil of radius 1 m is being heated by the change of magnetic field $\vec{B}$ passing perpendicular...

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Q JEE-MAIN 2021

An inductor of 10 mH is connected to a 20 V battery through a resistor of $10 \mathrm{k} \Omega$ and...

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Q JEE MAIN 2021

Consider an electrical circuit containing a two way switch ' $S$ '. Initially $S$ is open and then $T_1$ is...

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The arm PQ of a rectangular conductor is moving from x = 0 to x = 2b outwards and then...

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Q JEE MAIN 2021

Choose the correct option :

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Q JEE MAIN 2022

A conducting circular loop is placed in X – Y plane in presence of magnetic field $...

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Q JEE-MAIN 2021

The electric field in a region is given by $\vec{E}=\frac{2}{5} E_0 \hat{i}+\frac{3}{5} E_0 \hat{j}$ with $E_0=4.0 \times 10^3 \frac{N}{C}$. The...

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Q JEE Main 2019

A current loop, having two circular arcs joined by two radial lines is shown in the figure. It carries a...

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Q JEE Main 2019

A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2 m, 100 turns, and carrying a...

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Q JEE Main 2019

A conducting circular loop made of a thin wire, has area $3.5 \times 10-3 \mathrm{~m} 2$ and resistance $10 \Omega$....

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Q JEE MAIN 2021

A coil of inductance 2H having negligible resistance is connected to a source of supply whose voltage is given by...

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Q JEE MAIN 2021

The electric field in a region is given $\vec{E}=\left(\frac{3}{5} E_0 \hat{i}+\frac{4}{5} E_0 \hat{j}\right) \frac{N}{C}$. The ratio of flux of reported...

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Q JEE MAIN 2021

Figure shows a circuit that contains four identical resistors with resistance $\mathrm{R}=2.0 \Omega$, two identical inductors with inductance $\mathrm{L}=2.0 \mathrm{mH}$...

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Q JEE MAIN 2022

For the given circuit the current through battery of 6V just after closing the switch ‘S’ will be ……….A.

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Q JEE MAIN 2022

Magnetic flux (in weber) in a closed circuit of resistance $20 \Omega$ varies with time $t(s)$ as $\phi=8 t^2-9 t+5$....

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Q JEE Main 2022

The frequencies at which the current amplitude in an LCR series circuit becomes $\frac{1}{\sqrt{2}}$ times its maximum value, are $...

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Q JEE MAIN 2022

A coil of inductance 1 H and resistance $100 \Omega$ is connected to a battery of 6 v . Determine...

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Q JEE MAIN 2022

A small square loop of wire of side l is placed inside a large square loop of wire L (L...

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Q JEE MAIN 2022

A circular coil of 1000 turns each with area $1 \mathrm{~m}^2$ is rotated about its vertical diameter at the rate...

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Q JEE MAIN 2022

A metallic conductor of length 1 m rotates in a vertical plane parallel to east-west direction about one of its...

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Two coils of self inductance $L_1$ and $L_2$ are connected in series combination having mutual inductance of the coils as...

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Q JEE MAIN 2022

The dimension of mutual inductance is :

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Q JEE MAIN 2022

A $10 \Omega$, 20 mH coil carrying constant current is connected to a battery of 20 V through a switch...

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Q JEE MAIN 2022

A proton and an alpha particle of the same enter in a uniform magnetic field which is acting perpendicular to...

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Q JEE MAIN 2024

The magnetic flux $\phi$ (in weber) linked with a closed circuit of resistance $8 \Omega$ varies with time (in seconds)...

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Q JEE MAIN 2023

Two concentric circular coils with radii 1 cm and 1000 cm , and number of turns 10 and 200 respectively...

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Q JEE_MAIN_2023

Two long parallel wires carrying currents 8A and 15 A in opposite directions are placed at a distance of 7...

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Q JEE MAIN 2023

An insulated copper wire of 100 turns is wrapped around a wooden cylindrical core of the crosssectional area $24 \mathrm{~cm}^2$....

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Q JEE MAIN 2023

A metallic cube of side 15 cm moving along y-axis at a uniform velocity of $2 \mathrm{~ms}^{-1}$. In a region...

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Q JEE MAIN 2023

A coil has an inductance of 2 H and resistance of $4 \Omega$. A 10 V is applied across the...

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Q JEE MAIN 2023

The ratio of magnetic field at the centre of a current carrying coil of radius $r$ to the magnetic field...

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Q JEE MAIN 2023

Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R. Assertion...

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Q JEE MAIN 2023

An emf of 0.08 V is induced in a metal rod of length 10 cm held normal to a uniform...

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Q JEE MAIN 2023

In an ac generator, a rectangular coil of 100 turns each having area $14 \times 10^{-2} \mathrm{~m}^2$ is rotated at...

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Q JEE MAIN_2023

A wire of length 1 m moving with velocity 8 m/s at right angles to a magnetic field of 2T....

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A circular loop of radius r is carrying current I A. The ratio of magnetic field at the centre of...

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A square loop of area $25 \mathrm{~cm}^2$ has a resistance of $10 \Omega$. The loop is placed in uniform magnetic...

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Q JEE MAIN_2023

Three identical resistors with resistance $\mathrm{R}=12 \Omega$ and two identical inductors with sell inductance L = 5 mH are connected...

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Q JEE MAIN 2023

A square shaped coil of area $70 \mathrm{~cm}^2$ having 600 turns rotates in a magnetic field of $0.4 \mathrm{wbm}^{-2}$, about...

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Q JEE MAIN 2023

A coil is placed in magnetic field such that plane of coil is perpendicular to the direction of magnetic field....

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Q JEE MAIN_2023

A long solenoid is formed by winding 70 turns cm–1. If 2.0 A current flows, then the magnetic field produced...

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Q JEE MAIN 2023

n the given figure, an inductor and a resistor are connected in series with a battery of emf E volt....

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Q JEE MAIN 2023

A conducting circular loop is placed in a uniform magnetic field of 0.4 T with its plane perpendicular to the...

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Q JEE MAIN 2023

A 20 cm long metallic rod is rotated with 210 rpm about an axis normal to the rod passing through...

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Q JEE MAIN 2023

The magnetic field B crossing normally a square metallic plate of area $4 \mathrm{~m}^2$ is changing with time as shown...

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Q JEE MAIN 2023

An oscillating LC circuit consists of a 75 mH inductor and a $1.2 \mu \mathrm{~F}$ capacitor. If the maximum charge...

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Q JEE MAIN 2023

Given below are two statements:

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Q JEE MAIN 2023

An ideal transformer with purely resistive load operates at 12 kV on the primary side. It supplies electrical energy to...

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Q JEE MAIN 2023

A 12 V battery connected to a coil of resistance $6 \Omega$ through a switch, drives a constant current in...

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Q JEE MAIN 2023

The induced emf can be produced in a coil by A. moving the coil with uniform speed inside magnetic field...

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Q JEE MAIN 2023

As per the given figure, if $\frac{\mathrm{dl}}{\mathrm{dt}}=-1 \mathrm{~A} / \mathrm{s}$ then the value of $V_{A B}$ at this instant will...

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Q JEE MAIN 2023

A certain elastic conducting material is stretched into a circular loop. It is placed with its plane perpendicular to a...

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Q JEE MAINS 20232

A solenoid of 1200 turns is wound uniformly in a single layer on a glass tube 2 m long and...

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Q JEE MAIN 2024

A square loop PQRS having 10 turns, area $3.6 \times 10^{-3} \mathrm{~m}^2$ and resistance 100Ω is slowly and uniformly being...

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Q JEE MAINS 2023

Math List I with List II

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Q JEE MAIN 2023

The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $\mathrm{rA}=10 \mathrm{~cm}$ and $\mathrm{CB}_{\mathrm{B}}=20 \mathrm{~cm}$...

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Q JEE MAIN 2023

Find the mutual inductance in the arrangement, when a small circular loop of wire of radius ‘R’ is placed inside...

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Q JEE MAINS 2024

A small square loop of wire of side $\ell$ is placed inside a large square loop of wire of side...

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Q JEE MAINS 2024

A coil is placed perpendicular to a magnetic field of 5000" " T. When the field is changed to 3000"...

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A rectangular loop of sides 12cm and 5cm, with its sides parallel to the x-axis and y-axis respectively moves with...

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Q JEE MAIN 2024

Two conducting circular loops A and B are placed in the same plane with their centres coinciding as shown in...

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A ceiling fan having 3 blades of length 80 cm each is rotating with an angular velocity of 1200rpm. The...

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Q JEE MAIN 2024

A square loop of side 10 cm and resistance $0.7 \Omega$ is placed vertically in east-west plane. A uniform magnetic...

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Q JEE MAIN 2024

A capacitor of capacitance 100μF is charged to a potential of 12 V and connected to a 6.4mH inductor to...

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Q JEE MAIN 2024

Two coils have mutual inductance 0.002H. The current changes in the first coil according to the relation $i=i_0$ sin⁡ωt, where...

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Q JEE MAIN 2024

A rectangular loop of length 2.5 m and width 2m is placed at $60^∘$ to a magnetic field of 4T....

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Q JEE MAIN 2025

Conductor wire ABCDE with each arm 10 cm in length is placed in magnetic field of $\frac{1}{{\sqrt 2 }}$ Tesla,...

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Q JEE MAIN 2025

A coil of area A and N turns is rotating with angular velocity $\omega$ in a uniform magnetic field $...

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Q JEE MAIN 2025

A rectangular metallic loop is moving out of a uniform magnetic field region to a field free region with a...

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