The average drift velocity in a wire of length L and area of cross
ection A is found to be V, when the P.d. across the wire is V.
1) what will be the drift velocity in the same wire if the P.d. across it
V/2, and (b) what will be the drift velocity if the wire is stretched to
ch a length that its radius becomes half keeping the P.d. equal to V.
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Explanation:
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