Question

The self inductance of a coil is L, keeping the length and area same, the number of turns in the coil is increased to four times. The self inductance of the coil will now be

• A. $\frac{1}{4}L$
• B. L
• C. 4 L
• D. 16 L

Answer 1

Answer: (D)

16 L

Answer 2

$\mathbf{L}\mathbf{\propto}\mathbf{N}^{\mathbf{2}}$