alleryStart learning →A loop of radius 10 cm carries 5 A. Its central field is (mu0 = 4π x 10^-7)
A6.28 x 10^-5 T
B3.14 x 10^-5 T
C3.14 x 10^-4 T
D1.57 x 10^-5 T
Answer & Solution
Correct answer: B. 3.14 x 10^-5 T
B = mu0 I/(2R) = 4 pi e-7 x 5/0.2 = 3.14e-5 T.
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