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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
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
- A spherical drop of mercury having a potential of 2.5 v is obtained as a result
- A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined
- A particle of mass m executes simple harmonic motion with amplitude
- If a solid ball of metal has a concentric spherical cavity with in it if the ball
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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