alleryStart learning →A coil of 10 turns, radius 4 cm and current 2 A has what central field?
A3.1 x 10^-4 T
B6.3 x 10^-5 T
C1.6 x 10^-4 T
D3.1 x 10^-5 T
Answer & Solution
Correct answer: A. 3.1 x 10^-4 T
B = mu0 N I/(2R) = 4 pi x 10^-7 x 10 x 2/0.08 = 3.14 x 10^-4 T.
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