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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
- An open knife edge of mass 200g is dropped from height 5m on a cardboard
- Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity
- Kepler’s third law states that square of period of revolution (T) of a planet
- The intensity at the maximum in a Young’s double slit experiment is I₀.
- The energy released by the fission of one uranium atom is 200 MeV.
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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