Question

Two inductance coils, of same self inductance, are corrected in parallel and the distance between them is large. The resultant self inductance of the coil will be

• A. $\frac{L}{4}$
• B. $2L$
• C. $L$
• D. $\frac{L}{2}$

Answer 1

Answer: (D)

$\frac{L}{2}$

Resultant self inductance L'
$1/L^{\prime }=1/L+1/L$
$L^{\prime }=L/2$