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Q JEE MAIN 2022
A 1 m long copper wire carries a current of 1 A . If the cross section of the wire is $2.0 \mathrm{~mm}^2$ and the...
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Q JEE MAIN 2022
In meter bridge experiment for measuring unknown resistance ' S ', the null point is obtained at a distance 30 cm from the left side...
JEE Main Physics Easy
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Q JEE MAIN 2022
Two sources of equal emfs are connected in series. This combination is connected to an external resistance $R$. The internal resistances of the two sources...
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Q JEE MAIN 2022
The current I in the given circuit will be :
JEE Main Physics Easy
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Q JEE MAIN 2022
Which of the following physical quantities have the same dimensions ?
JEE Main Physics Easy
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Q JEE MAIN 2022
Water fall from a 40 m high dam at the rate of $9 \times 10^4 \mathrm{~kg}$ per hour. Fifty percentage of gravitational potential energy can...
JEE Main Physics Easy
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Q JEE MAIN 2022
In the given circuit 'a' is an arbitrary constant. The value of m for which the equivalent circuit resistance is minimum, will be $\sqrt{\frac{x}{2}}$ ....
JEE Main Physics Easy
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Q JEE MAIN 2022
The current density in a cylindrical wire of radius r = 4.0 mm is $1.0 \times 10^6 \mathrm{~A} / \mathrm{m}^2$. The current through the outer...
JEE Main Physics Medium
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Q JEE MAIN 2022
Two resistors are connected in series across a battery as shown in figure. If a voltmeter of resistance $2000 \Omega$ is used to measure the...
JEE Main Physics Easy
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Q JEE MAIN 2022
The combination of two identical cells, whether connected in series or parallel combination provides the same current through an external resistance of $2 \Omega$. The...
JEE Main Physics Medium
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