⇦ | ![]() | ⇨ |
A parallel plate capacitor as a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is:
Options
(a) 1/2 ?¬ツタ E²
(b) E² Ad / ?¬ツタ
(c) 1/2 ?¬ツタ E² Ad
(d) ?¬ツタ E Ad
Correct Answer:
1/2 ?¬ツタ E² Ad
Explanation:
The energy stored by capacitor U = 1/2 CV²
…(i)
V is the p.d. between two plates of the capacitor.
The capacitance of the parallel plate capacitor V = E.d. C = A ?¬ツタ / d
Substituting the value of C in equation (i)
U = 1/2 A ?¬ツタ / d (Ed)²
= 1/2 ?¬ツタ E² Ad
Related Questions:
- Light of wavelength λ from a point source falls on a small circular obstacle
- A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work
- An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 kg
- A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal
- In the middle of the depletion layer of a reverse-biased P-N junction, the
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply