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A parallel plate condenser has a uniform electric field E(V/m) in the space between the plates. If the distance between the plates is d(m) and area of each plate is A(m²) the energy (joules) stored in the condenser is
Options
(a) E² Ad / ?￢ﾂﾀ
(b) 1/2 ?￢ﾂﾀ E²
(c) ?￢ﾂﾀ E Ad
(d) 1/2 ?￢ﾂﾀ E² Ad
Correct Answer:
1/2 ?￢ﾂﾀ E² Ad
Explanation:
U = 1/2 CV²
U = 1/2 (A ?￢ﾂﾀ / d) (Ed)²
= 1/2 ?￢ﾂﾀ E² Ad
Related Questions: - In insulators (CB is Conduction Band and VB is Valence Band)
- Light of wavelength λ is incident on slit of width d. The resulting diffraction
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- A silver wire of radius 0.1 cm carries a current of 2A. If the charge density in silver
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In insulators (CB is Conduction Band and VB is Valence Band)
- Light of wavelength λ is incident on slit of width d. The resulting diffraction
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- A silver wire of radius 0.1 cm carries a current of 2A. If the charge density in silver
- The oscillating frequency of a cyclotron is 10 MHz. If the radius of its Dees is o.5 m,
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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