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A solenoid core has relative permeability 200 and H = 2000 A/m. What is B in the core?
A0.50 T
B0.25 T
C1.0 T
D0.10 T
Answer & Solution
Correct answer: A. 0.50 T
B = mu_r mu0 H = 200 x 4 pi x 10^-7 x 2000, which is about 0.50 T.
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