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Q.

A current of 5 A is passing through a metallic wire of cross-sectional area 4 x 10-6 m2 . If the density of charge carriers of the wire is 5 x 1026 m-3 , the drift velocity of the electrons will be:

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a

1 x 102 ms-1

b

1.56 x 10-2 ms-1

c

1.56 x 10-3 ms-1

d

1 x 10-2 ms-1

answer is B.

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