Q. The expression for magnetic induction inside a solenoid of length $L$ carrying a current $I$ and having $N$ number of turns is
A) $\frac{\mu_{0}}{4\pi}\frac{N}{LI}$
B) $\mu_{0}NI$
C) $\frac{\mu_{0}}{4\pi}\ NLI$
D) $\mu_{0}\frac{N}{L}I$
Explanation
(d) $B = \mu_{0}ni = \mu_{0}\frac{N}{L}i$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.