Current Electricity

Related Questions

• The resistance of an ideal voltmeter is

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• Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt respectively are connected in series across a potential difference of 300 volt, then

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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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• Six equal resistances are connected between points P, Q and R as shown in the figure. Then the net resistance will be maximum between

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• There is a current of 40 ampere in a wire of $10^{-6}m^2$ area of cross-section. If the number of free electron per $m^3$ is $10^{29}$, then the drift velocity will be

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