Current Electricity

Related Questions

• The alloys constantan and manganin are used to make standard resistance due to they have

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• The number of dry cells, each of e.m.f. 1.5 volt and internal resistance 0.5 ohm that must be joined in series with a resistance of 20 ohm so as to send a current of 0.6 ampere through the circuit is

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• Two wires of same material have length $L$ and $2L$ and cross–sectional areas $4A$ and $A$ respectively. The ratio of their specific resistance would be

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• If all the resistors shown have the value 2 ohm each, the equivalent resistance over AB is

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• In a metre bridge experiment null point is obtained at 20 cm from one end of the wire when resistance X is balanced against another resistance Y. If X<Y, then where will be the new position of the null point from the same end, if one decides to balance a resistance of 4X against Y

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