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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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- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A small rod of bismuth is suspended freely between the poles of a strong electromagnet.
- A car moving with a velocity of 36 km/hr crosses a siren of frequency 500 Hz.
- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
- Electric field at a point of distance r from a uniformly charged wire of infinite
- A polished metal plate has a rough and black-spot. It is heated to 1400 K
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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