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Question

Across a conductor of length 40 cm, a potential difference of 10 V is maintained. The mobility of electrons if the drift velocity of electrons is 5×106 m/s is

A
2×107 m2/Vs
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B
1×107 m2/Vs
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C
4×106 m2/Vs
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D
0.5×107 m2/Vs
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