alleryStart learning →A solenoid has 500 turns per metre and carries 4 A. The field inside is
A5.0 x 10^-3 T
B2.5 x 10^-2 T
C2.5 x 10^-3 T
D1.26 x 10^-3 T
Answer & Solution
Correct answer: C. 2.5 x 10^-3 T
B = mu0 n I = 4 pi e-7 x 500 x 4 = 2.5e-3 T.
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