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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: - A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
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- In a series resonant LCR circuit, the voltage across R is 100 volts and R =1kΩ
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
- An aeroplane is flying horizontally with a velocity of 216 km/h at a height of 1960 m.
- In a series resonant LCR circuit, the voltage across R is 100 volts and R =1kΩ
- The refractive index of water, glass and diamond are 1.33, 1.50, 2.40 respectively
- Certain quantity of water cools from 70⁰ C to 60⁰C in the first 5 minutes and to 54⁰C
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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