Current Electricity

Related Questions

• The temperature coefficient of resistance for a wire is $0.00125/^\circ C$. At 300K its resistance is 1 ohm. The temperature at which the resistance becomes 2 ohm is

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• There are $n$ similar conductors each of resistance $R$. The resultant resistance comes out to be $x$ when connected in parallel. If they are connected in series, the resistance comes out to be

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• A cell of negligible resistance and e.m.f. 2 volts is connected to series combination of 2, 3 and 5 ohm. The potential difference in volts between the terminals of 3 ohm resistance will be

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• A wire has a resistance of 12 ohm. It is bent in the form of equilateral triangle. The effective resistance between any two corners of the triangle is

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• The arrangement as shown in figure is called as

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