WAEC - Physics (2000 - No. 40)
An inductor of inductance 10H carries a current of 0.2A. Calculate the energy stored in the inductor
0.1J
0.2J
1.0J
2.0J
Vysvětlení
The energy(W)stored in an inductor is calculated by the formula: \(\frac{1}{2}\)LI\(^2\)
= \(\frac{1}{2}\) x 10 x (0.2)\(^2\)
= 0.2J