The current sensitivity of a galvanometer |EMF|JEEMAIN 2022

Competishun Header

JEE Main 2022

S1_2807

Question

The current sensitivity of a galvanometer can be increased by : (A) decreasing the number of turns (B) increasing the magnetic field (C) decreasing the area of the coil (D) decreasing the torsional constant of the spring Choose the most appropriate answer from the options given below :

Select the correct option:

A

(B) and (C) only

B

(C) and (D) only

C

(A) and (C) only

D

(B) and (D) only

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Easy

Start Preparing for JEE with Competishun

Filters 0

Showing 18 questions

QJEE Main 20242024

A series LCR circuit is subjected to an AC signal of $200 \mathrm{~V}, 50 \mathrm{~Hz}$. If the voltage across the...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

A man carrying a monkey on his shoulder does cycling smoothly on a circular track of radius 9 m and...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

The electrostatic force $\left(\overrightarrow{\mathrm{F}}_1\right)$ and magnetic force ( $\overrightarrow{\mathrm{F}}_2$ ) acting on a charge q moving with velocity v can...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

A particle moves in $x-y$ plane under the influence of a force $\vec{F}$ such that its linear momentum is $...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

If n is the number density and d is the diameter of the molecule, then the average distance covered by...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

The vehicles carrying inflammable fluids usually have metallic chains touching the ground :

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

A galvanometer of resistance $100 \Omega$ when connected in series with $400 \Omega$ measures a voltage of upto 10 V...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

The angular momentum of an electron in a hydrogen atom is proportional to : (Where r is the radius of...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

Which of the following statement is not true about stopping potential $\left(\mathrm{V}_0\right)$ ?

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

Given below are two statements :
Statement I : When the white light passed through a prism, the red...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

Consider the matrices : $\mathrm{A}=\left[\begin{array}{rr}2 & -5 \\ 3 & \mathrm{~m}\end{array}\right], \mathrm{B}=\left[\begin{array}{c}20 \\ \mathrm{~m}\end{array}\right]$ and $X=\left[\begin{array}{l}x \\ y\end{array}\right]$. Let the...

JEE MainPhysicsEasy

View Solution→

QJEE Main 20242024

Let the inverse trigonometric functions take principal values. The number of real solutions of the equation $...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

If $\left(\frac{1}{\alpha+1}+\frac{1}{\alpha+2}+\cdots .+\frac{1}{\alpha+1012}\right)-\left(\frac{1}{2 \cdot 1}+\frac{1}{4 \cdot 3}+\frac{1}{6 \cdot 5}+\cdots .+\frac{1}{2024 \cdot 2023}\right)=\frac{1}{2024}$, then $\alpha$ is equal to-

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The square of the distance of the image of the point $(6,1,5)$ in the line $\frac{x-1}{3}=\frac{y}{2}=\frac{z-2}{4}$, from the origin is

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $\mathrm{A}, \mathrm{B}$ and C be three points on the parabola $y^2=6 x$ and let the line segment $A B$...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $A=\{(x, y): 2 x+3 y=23, x, y \in N\}$ and $\mathrm{B}=\{\mathrm{x}:(\mathrm{x}, \mathrm{y}) \in \mathrm{A}\}$. Then the number of one-one...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The number of integers, between 100 and 1000 having the sum of their digits equals to 14, is

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

For a differentiable function $\mathrm{f}: I R \rightarrow I R$, suppose $f^{\prime}(\mathrm{x})=3 f(\mathrm{x})+\alpha$, where $\alpha \in \mathrm{IR}, f(0)=1$ and $...

JEE MainMathematicsEasy

View Solution→