Current Electricity

Related Questions

• To get the maximum current from a parallel combination of n identical cells each of internal resistance r in an external resistance R, when

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• Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by

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• Every atom makes one free electron in copper. If 1.1 ampere current is flowing in the wire of copper having 1 mm diameter, then the drift velocity (approx.) will be (Density of copper $= 9 \times {10^3}\,kg\,{m^{ - 3}}$ and atomic weight = 63)

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• A uniform wire of resistance $R$ is uniformly compressed along its length, until its radius becomes n times the original radius. Now resistance of the wire becomes

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• Find the equivalent resistance across AB

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