A uniform copper wire carries a current i amperes and has p carries per metre3. The length of the wire is l metres and its cross-section area is a metre2. If the charge on a carrier is q coulombs, the drift velocity in ms−1 is given by
i/lsq
i/psq
psq/i
i/pslq
A
i/pslq
B
i/lsq
C
psq/i
D
i/psq
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