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Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2021
An electric bulb rated as 200 W at 100 V is used in a circuit having 200 V supply. The resistance ‘R’ that must be...
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Q JEE MAIN 2021
In the given potentiometer circuit arrangement, the balancing length AC is measured to be 250 cm . When the galvanometer connection is shifted from point...
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Q JEE-MAIN 2021
In the given figure, there is a circuit of potentiometer of length AB = 10 m. The resistance per unit length is 0.1 $\Omega$ per...
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Q JEE MAIN 2021
In an electric circuit, a call of certain emf provides a potential difference of 1.25 V across a load resistance of $5 \Omega$. However, it...
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Q JEE MAIN 2021
A steel rod with $y=2.0 \times 10^{11} \mathrm{Nm}^{-2}$ and $\alpha=10^{-5} \mathrm{C}^{-1}$ of length 4 m and area of cross-section $10 \mathrm{~cm}_2$ is heated from $...
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Q JEE MAIN 2021
A Copper (Cu) rod of length 25 cm and cross-sectional area 3 mm2 is joined with a similar Aluminium (Al) rod as shown in figure....
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Q JEE MAIN 2021
A current of 5 A is passing through a non-linear magnesium wire of cross-section $0.04 \mathrm{~m}^2$ . At every point the direction of current density...
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Q JEE MAIN 2019
In the figure shown, what is the current (in Ampere) drawn from the battery? You are given : $$ \begin{aligned} & \mathrm{R}_1=15 \Omega, \mathrm{R}_2=10 \Omega,...
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Q JEE MAIN 2021
In the given figure, a battery of emf E is connected across a conductor PQ of length ' I ' and different area of cross-sections...
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Q JEE MAIN 2019
In the circuit shown, a four wire potentiometer is made of a 400 cm long wire, which extends between A and B . The resistance...
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