Current Electricity

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Q JEE MAIN 2023

Equivalent resistance between the adjacent corners of a regular n-sided polygon of uniform wire of resistance R would be:

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Q JEE MAIN 2023

The H amount of thermal energy is developed by a resistor in 10 s when a current of 4A is passed through it. If the...

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Q JEE MAIN 2023

When a resistance of $5 \Omega$ is shunted with a moving coil galvanometer, it shows a fullscale deflection for a current of 250 mA ,...

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Q JEE MAIN 2023

A potential $V_0$ is applied across a uniform wire of resistance $R$. The power dissipation is $P_1$. The wire is then cut into two equal...

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Q JEE MAIN 2023

The current flowing through a conductor connected across a source is 2A and 1.2 A at 0oC and 100oC respectively. The current flowing through the...

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Q JEE MAIN 2023

10 resistors each of resistance 10 can be connected in such as to get maximum and minimum equivalent resistance. The ratio of maximum and minimum...

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Q JEE MAIN 2023

In the circuit diagram shown in figure given below, the current flowing through resistance $3 \Omega$ is $\frac{x}{3} A$. is A. The value of x...

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Q JEE MAIN 2023

A network of four resistances is connected to 9V battery, as shown in figure. The magnitude of voltage difference between the points A and B...

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Q JEE MAIN 2023

A current of 2 A flows through a wire of cross-sectional area $25.0 \mathrm{~mm}^2$. The number of free electrons in a cubic meter are $...

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Q JEE MAIN

Different combination of 3 resistors of equal resistance R are shown in the figures. The increasing order for power dissipation is:

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