Home Physics Current Electricity Grouping of Resistances A wire of diameter 0.02 meter contains 10 28…
Physics Current Electricity Grouping of Resistances MCQ (Single Correct)

A wire of diameter 0.02 meter contains 10 28 free electrons per cubic meter. For an electrical current of 100 A, the drift velocity of the free electrons in the wire is nearly

A
1 × × 10 –19 m/s
B
5 × × 10 –10 m/s
C
2 × × 10 –4 m/s
D
8 × × 10 3 m/s

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The correct answer is:
C

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