Current Electricity

Related Questions

• Two resistors having equal resistances are joined in series and a current is passed through the combination. Neglect any variation in resistance as the temperature changes. In a given time interval

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• A wire of diameter 0.02 metre contains $10^{28}$ free electrons per cubic metre. For an electrical current of 100 A, the drift velocity of the free electrons in the wire is nearly

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• If each of the resistance of the network shown in the figure is R, the equivalent resistance between A and B is

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• In the circuit given $E = 6.0 V$, $R_1 = 100$ ohms, $R_2 = R_3 = 50$ ohms, $R_4 = 75$ ohms. The equivalent resistance of the circuit, in ohms, is

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• An electric wire of length ‘I’ and area of cross-section $a$ has a resistance R ohm. Another wire of the same material having same length and area of cross-section 4a has a resistance of

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