a wire is folded in the form of a circle . what will be the total resistance at the end of its one of the diameter if the length of wire is 20cm and resistance is 2 ohm per cm
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2 × 20
40ohm will be the ans
R is diretly proposnal to L
40ohm will be the ans
R is diretly proposnal to L
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resistance become 0.5 ohm
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