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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: - A steady current is passing through a linear conductor of non-uniform cross-section.
- Two small spherical shells A and B are given positive charges of 9C and 4C
- If longitudinal strain for a wire is 0.03 and its poisson’s ratio is 0.5
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A steady current is passing through a linear conductor of non-uniform cross-section.
- Two small spherical shells A and B are given positive charges of 9C and 4C
- If longitudinal strain for a wire is 0.03 and its poisson’s ratio is 0.5
- A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion
- An open pipe resonates with a tuning fork of frequency 500 Hz. It is observed
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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