The magnetic potential energy stored in a certain inductor is 25 mJ , when the current in the induct

Question

The magnetic potential energy stored in a certain inductor is 25 mJ , when the current in the inductor is 60 mA . This inductor is of inductance

Professor PC Thomas Classes · Answer

$U = \frac{1}{2} L I^2 \Rightarrow 25 	imes 10^{-3} = \frac{1}{2} L (60 	imes 10^{-3})^2$.