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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
- Across a metallic conductor of non-uniform cross-section, a constant potential
- A particle is moving in a circle with uniform speed v. In moving from a point to another
- The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is
- If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region
- The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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