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A coil of resistance 10 Ω and an inductance 5 H is connected to a 100 volt

A coil of resistance 10 Ω and an inductance 5 H is connected to a 100 volt battery. The energy stored in the coil is

Options

(a) 250 erg
(b) 250 J
(c) 125 erg
(d) 125 J

Correct Answer:

250 J

Explanation:

Energy U = (1/2) LI²

= (1/2) × 5 × (100/10)² = 250 J

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