Current Electricity

Related Questions

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• There is a current of 20 amperes in a copper wire of ${10^{ - 6}}$ square metre area of cross-section. If the number of free electrons per cubic metre is ${10^{29}}$, then the drift velocity is

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• A current of 2 A flows in a system of conductors as shown. The potential difference $({V_A} - {V_B})$ will be

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• In the circuit shown below the resistance of the galvanometer is 20 ?. In which case of the following alternatives are the currents arranged strictly in the decreasing order

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