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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
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The impurity atoms with which pure silicon may be doped to make it a p-type
- In the elastic collision of objects
- Two parallel metal plates having charges +Q and -Q face each other at a certain
- Two electrons are separated by a distance of 1Å. What is the coulomb force between them?
- A particle moves along the x-axis from x=0 to x=5 m under the influence of a force
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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