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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 number of photons of wavelength of 540 nm emitted per second by an electric bulb
- A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction
- Two thin long conductors seprated by a distance d carry currents
- A galvanometer is converted into an ammeter by connecting
- The electric field in a certain region is acting radially outward and is given by E=Ar.
Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The number of photons of wavelength of 540 nm emitted per second by an electric bulb
- A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction
- Two thin long conductors seprated by a distance d carry currents
- A galvanometer is converted into an ammeter by connecting
- The electric field in a certain region is acting radially outward and is given by E=Ar.
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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