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Multiple Choice
A long wire having total resistance of 10 Ω is made into a solenoid with 20 turns of wire per centimeter. The wire is connected to a battery, which provides a current in order to produce a 0.04 T magnetic field through the center of the solenoid. What voltage must this battery have?
A
6.3×10−3 V
B
160 V
C
16,000 V
D
6.4×108 V
13:57m
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