Physics, asked by PranavSangam, 2 months ago

a nikel wire has diameter of 0.6mm and a resistivity of 6.8x10^-8ohm meter. what will be the length of wire to make resistance 20ohm. what will be it's new resistance is (a) length is doubled (b) diameter is halved (c) length is doubled and diameter is halved

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Answered by 69408

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Ømegam . Explanation: Given that, . length of wire l = 2 m. Resistance R = 30 ohm. diameter d = ...

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