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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
- Three resistances P,Q,R each of 2Ω and an unknown resistances S form the four arms
- If 75% of the radioactive reaction is completed in 2 hrs, what would be
- Two sources of sound placed close to each other are emitting progressive waves
- A bomb of mass 16 kg at rest explodes into two pieces of masses of 4 kg and 12 kg.
- The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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