| ⇦ | 
| ⇨ |
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: - An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF.
- If the magnetising field on a ferromagnetic material is increased, its permeability
- The dual nature of light is exhibited by
- A wire of length 2 m is made from 10 cm³ of copper. A force F is applied so that
- Two coherent sources of different intensities send waves which interfere.
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF.
- If the magnetising field on a ferromagnetic material is increased, its permeability
- The dual nature of light is exhibited by
- A wire of length 2 m is made from 10 cm³ of copper. A force F is applied so that
- Two coherent sources of different intensities send waves which interfere.
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