Current Electricity

Related Questions

• When a resistance of 2 ohm is connected across the terminals of a cell, the current is 0.5 A. When the resistance is increased to 5 ohm, the current is 0.25 A. The e.m.f. of the cell is

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• A galvanometer with a resistance of 12 $\Omega$ gives full scale deflection when a current of 3 mA is passed. It is required to convert it into a voltmeter which can read up to 18 V. the resistance to be connected is

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• 4 bulbs marked 40 W, 250 V are connected in series with 250 V mains. The total power is

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• A piece of fuse wire melts when a current of 15 ampere flows through it. With this current, if it dissipates 22.5 W, the resistance of fuse wire will be

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• Equivalent resistance between A and B will be

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