Question

A potential difference of 5 V is applied across a
conductor of length 10 cm. If drift velocity of
electrons is 2.5 x 10-4 m/s, then electron mobility
will be
(1) 5 x 10-4 m2 V-1 3-1
(2) 5 x 10-6 m2 V-1 5-1
(3) 5 x 10-2 m2 V-1 s-1
(4) Zero
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Answer 1

Answer:

please refer to the attachment