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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
Related Questions: - The area of cross-section of one limb of an U-tube is twice that of the other.
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The area of cross-section of one limb of an U-tube is twice that of the other.
- If λ₁ and λ₂ are the wavelengths of the first members of the Lyman and Paschen
- Which scientist experimentally proved the existence of electromagnetic waves?
- A body cools in 7 minute from 60⁰C to 40⁰C. What time, in minute does it take to cool
- Which wavelengths of sun is used finally as electric energy?
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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