Q. The inductance $L$ of a solenoid depends upon its radius $R$ as

15449 278 J & K CETJ & K CET 2014Electromagnetic Induction Report Error

A

$L \propto R$

15%

B

$L \propto 1/ R$

22%

C

$L \propto R^{2}$

61%

D

$L \propto R^{3}$

2%

Solution:

Self-inductance $L \propto R^{2}$