If `'N'` is the number of turns in a coil, the value of self inductance varies as

Options

A. `N^(0)`
B. `N`
C. `N^(2)`
D. `N^(-2)`

Answer

C

Explanation

The self inductance of plane circular coil is given by,
`L=(1)/(2)mu_(0)pian^(2)" "` (`therefore (mu_(0)pia)/(2)` is constant)
`therefore Lpropn^(2)`.