Current Electricity

Related Questions

• If a wire of resistance R is melted and recasted to half of its length, then the new resistance of the wire will be

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• The reading of a high resistance voltmeter when a cell is connected across it is 2.2 V. When the terminals of the cell are also connected to a resistance of $5\,\Omega $ the voltmeter reading drops to 1.8 V. Find the internal resistance of the cell

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• A galvanometer of resistance $25\,\Omega $ gives full scale deflection for a current of 10 milliampere, is to be changed into a voltmeter of range 100 V by connecting a resistance of ‘R’ in series with galvanometer. The value of resistance R in $\Omega $ is

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• A steady current $i$ is flowing through a conductor of uniform cross-section. Any segment of the conductor has

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• Two heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct

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