MHT CET Physics question

Physics Moving Charges and Magnetism MHT CET

The radius and number of turns of a circular coil are doubled. The magnetic induction at its centre will be :

(A)One fourth
(B)Double
(C)Four times
(D)No changeCorrect

Answer: (D)

Solution

; with and the ratio is unchanged, so B is unchanged. Hence the correct option is (d).

Question ID VK-078289