Current Electricity

Related Questions

• A copper wire of resistance R is cut into ten parts of equal length. Two pieces each are joined in series and then five such combinations are joined in parallel. The new combination will have a resistance

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• If six identical cells each having an e.m.f. of 6V are connected in parallel, the e.m.f. of the combination is

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• A 10 m long wire of 20$\Omega$ resistance is connected with a battery of 3 volte.m.f. (negligible internal resistance) and a 10 $\Omega$ resistance is joined to it is series. Potential gradient along wire in volt per meter is

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• An ammeter with internal resistance $90\,\Omega $ reads 1.85 A when connected in a circuit containing a battery and two resistors 700$\Omega $ and $410\,\Omega $ in series. Actual current will be

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• The resistance of a galvanometer is 25 ohm and it requires $50\,\mu A$ for full deflection. The value of the shunt resistance required to convert it into an ammeter of 5 amp is

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