Multiple Choice
Assuming there are 0.845 * 1029 electrons per m3 and the drift velocity in a wire is 4.12 * 10-8 m/s.If the current in the wire is 30 mA,what is the cross-sectional area of the wire?
A) 50 mm2
B) 69 mm2
C) 63 mm2
D) 45 mm2
E) 54 mm2
Correct Answer:
Verified
Correct Answer:
Verified
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