Current Electricity

Related Questions

• n identical cells each of e.m.f.E and internal resistance r are connected in series. An external resistance R is connected in series to this combination. The current through R is

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• A wire 100 $cm$ long and 2.0 $mm$ diameter has a resistance of 0.7 ohm, the electrical resistivity of the material is

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• A copper wire of resistance R is cut into ten parts of equal length. Two pieces each are joined in series and then five such combinations are joined in parallel. The new combination will have a resistance

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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 A and B of same material and same mass have radius $2r$ and $r$. If resistance of wire A is $34\,\Omega$, then resistance of B will be

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