A solenoid with 400 turns has a radius of 0.040 m and is 40 cm long. If this solenoid carries a current of
what is the magnitude of the magnetic field near the center of the solenoid? (μ0 = 4π × 10-7 T ∙ m/A)
A) 16 mT
B) 4.9 mT
C) 15 mT
D) 6.0 mT
E) 9.0 mT
Correct Answer:
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