Question

If '$N$' is the number of turns in a circular coil then the value of self inductance varies as.

• A. $N^0$
• B. $N$
• C. $N^2$
• D. $N^{-2}$

Answer 1

The correct option is C $N^2$

Self-inductance of the coil is given by the relation

$L=\frac{{\mu }_o{N}^{2}A}{l}$

here $N$ is the number of turns in the coil, $A$ and $l$ are the area and length of the coil, respectively.

$⟹$ $L\propto N^2$