# A potential difference of  is applied at the ends of a copper wire of length  and diameter . On doubling only , the drift velocity, a) Becomes two times b) Becomes half c) Does not change d) Becomes one-fourth

## Question ID - 150275 :- A potential difference of  is applied at the ends of a copper wire of length  and diameter . On doubling only , the drift velocity, a) Becomes two times b) Becomes half c) Does not change d) Becomes one-fourth

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Answer Key : (c) -
 (c) As  is independent of area of cross-section hence drift velocity will not change, when diameter is doubled

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