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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
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A ballon rises from rest with a constant acceleration g/8. A stone is released
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- In Raman effect, Stoke’s lines are spectral lines having
- The wave described by y = 0.25 sin (10 2πx – 2πt), where x and y are in meters
- Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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