Question

A very long solenoid of length L has n layers. There are N turns in each layer. Diameter of the solenoid is D and it carries current L. The magnetic field at the centre of the solenoid is _____ .
(A) directly propotional to D
(B) inversely proportional to D.
(C) independent of D
(D) directly proportional to L

Answer 1

A very long solenoid of length L has n layers. There are N turns in each layer. Diameter of the solenoid is D and it carries current L.

The magnetic field at the center of the solenoid is Independent of D.

Therefore the student can get right answer for this question without meeting any trouble of it.

Answer 2

Holla ^_^

☸ Required Answer is ⬇ ⬇⬇ ⬇


☯ C). independent of D

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