Current Electricity

Related Questions

• The resistance of a wire is $10\,\Omega $. Its length is increased by 10% by stretching. The new resistance will now be

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• The equivalent resistance between x and y in the circuit shown is

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• The heating coils rating at 220 volt and producing 50 cal/sec heat are available with the resistances $55\,\Omega ,\;110\,\Omega ,\;220\,\Omega $ and $440\,\Omega $. The heater of maximum power will be of

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• When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, resistance between any two of diametrically opposite points will be

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• Two wires of the same material and equal length are joined in parallel combination. If one of them has half the thickness of the other and the thinner wire has a resistance of 8 ohms, the resistance of the combination is equal to

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