If N is the number of turns in a coil, the value of self

Home » Electricity and Magnetism » Electromagnetic Induction » Question

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

1. N⁰
2. N
3. N²
4. N^–2

Correct Option: C

L =	Nφ	; φ = BA;
	i

B =	μ₀Ni
	2R

⇒ L =	N	=		μ₀Ni		A
	i			2R

=	μ₀N²	A ⇒ L ∝ N²
	2R