Question

A long solenoid with \(500\) turns per unit length carries a current of \(1.5\) A. The magnetic induction at one of the ends of the solenoid on its axis in tesla is

• A. \(32\times10^{-4}\) T
• B. \(4\times10^{-4}\) T
• C. \(47\times10^{-4}\) T
• D. \(16\times10^{-4}\) T
• E. \(8\times10^{-4}\) T

Hint:

For a long solenoid: \[ B_{\text{center}}=\mu_0 nI,\qquad B_{\text{end}}=\frac{1}{2}\mu_0 nI \]

Answer 1

The Correct Option is D