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A current of 5 A is passing through a metallic wire of cross-sectional area $4 x 10^{- 6} m^{2}$ . If the density of charge carriers of the wire is $5 x 10^{26} m^{- 3}$ , the drift velocity of the electrons will be:

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1 x 102 ms-1

1.56 x 10-2 ms-1

1.56 x 10-3 ms-1

1 x 10-2 ms-1

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detailed solution

Correct option is B

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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 current of 5 A is passing through a metallic wire of cross-sectional area $4 x 10^{- 6} m^{2}$ . If the density of charge carriers of the wire is $5 x 10^{26} m^{- 3}$ , the drift velocity of the electrons will be: