Question

A long solenoid has n turns per metre and current I amp is flowing through it. The magnetic field at the ends of the solenoid is-

• A. Zero
• B. µ₀nI
• C. $\frac { \mu _ { 0 } \mathrm { nI } } { 2 }$
• D. 2µ₀nI

Answer 1

Answer: (C)

$\frac { \mu _ { 0 } \mathrm { nI } } { 2 }$

Answer 2