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Current Electricity

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE Main 2019
A copper wire is stretched to make it 0.5% longer. The percentage change in its electrical resistance if its volume remains unchanged is
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Q JEE MAIN 2021
A resistor develops 500 J of thermal energy in 20s when a current of 1.5 A is passed through it. If the current is increased...
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Q _JEE_MAIN_2021
The equivalent resistance of series combination of two resistors is 's'. When they are connected in parallel, the equivalent resistance is 'p'. If s =...
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Q JEE_MAIN_2021
A current of 10 A exists in a wire of crosssectional area of $5 \mathrm{~mm}^2$ with a drift velocity of $2 \times 10^{-3} \mathrm{~ms}^{-1}$. The...
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Q JEE MAIN 2021
The voltage across the $10 \Omega$ resistor in the given circuit is $x$ volt.
...
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Q JEE MAIN 2021
In the experiment of Ohm's law, a potential difference of 5.0 V is applied across the end of a conductor of length 10.0 cm and...
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Q JEE MAIN 2021
A current of 6 A enters one corner P of an equilateral triangle PQR having 3 wires of resistance 2Ω each and leaves by the...
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Q JEE MAIN 2021
The resistance $R=\frac{V}{I}$, where $V=(50 \pm 2) V$ and $I=(20 \pm 0.2) A$. The percentage error in $R$ is ' $x$ ' $\%$. The value...
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Q JEE MAIN 2021
In the figure given, the electric current flowing through the $5 \mathrm{k} \Omega$ resistor is ' x ' mA .
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Q JEE MAIN 2021
A wire of 1 W has a length of 1 m . It is stitched till its length increases by $25 \%$. The percentage change...
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