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Question
Copper contains 8.4 x1028free electrons per cubic meter. A copper wire of cross-sectional area 7.4 x10-7m2carries a current of 1 A. The electron drift speed is approximately:
A) 3 x108m/s
B) 103m/s
C) 1 m/s
D) 10-4m/s
E) 10-23m/s
Answer
This answer is hidden. It contains 1 characters.
Related questions
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