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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
- The electric potential V at any point (x,y,z) all in meters in space is given by
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- Imagine a new planet having the same density as that of earth but it is 3 times bigger
- The energy released in the fission of 1 kg of ₉₂U²³⁵ is (energy per fission = 200 MeV)
- Two sound waves of wavelengths 5m and 6m formed 30 beats in 3 seconds
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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