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Current Electricity

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
A galvanometer is used in laboratory for detecting the null point in electrical experiments. If, on passing a current of 6 mA it produces a...
JEE Main Physics Easy
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Q JEE MAIN 2020
An electrical power line, having a total resistance of $2 \Omega$, delivers 1 kW at 220 V . The efficiency of the transmission line is...
JEE Main Physics Easy
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Q JEE MAIN 2019
In a Wheatstone bridge (see fig.), Resistances P and Q are approximately equal. When R $=400 \Omega$, the bridge is balanced. On interchanging P and...
JEE Main Physics Easy
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Q JEE MAIN 2019
Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in parallel combination...
JEE Main Physics Medium
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Q JEE MAIN 2019
In the circuit shown,

the switch $S_1$ is closed at time $t=0$ and the switch...
JEE Main Physics Hard
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Q JEE-MAIN 2020
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JEE Main Physics Easy
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Q JEE MAIN 2020
The length of a potentiometer wire is 1200 cm and it carries a current of 60 mA . For a cell of emf 5 V...
JEE Main Physics Medium
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Q JEE Main 2019
A potentiometer wire $A B$ having length $L$ and resistance $12 r$ is joined to a cell $D$ of emf $\varepsilon$ and internal resistance $r$....
JEE Main Physics Medium
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Q JEE Main 2019
A uniform metallic wire has a resistance of $18 \Omega$ and is bent into an equilateral triangle. Then, the resistance between any two vertices of...
JEE Main Physics Easy
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Q JEE Main 2019
A 2 W carbon resistor is color coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor...
JEE Main Physics Medium
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