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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
Related Questions: - A uniform plank of Young’s modulus Y is moved over a smooth horizontal surface
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A uniform plank of Young’s modulus Y is moved over a smooth horizontal surface
- A body covers 200 cm in the first 2 seconds and 220 cm in the next 4 seconds.
- Huygen’s principle of secondary wavelets may be used to
- A condenser of capacity C is charged to a potential difference of V₁. The plates
- Suppose for some reasons, radius of earth were to shrink by 1% of present value,
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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