SSC JE Electrical Engineering 23 Jan 2018 Evening Paper

Question : 108 of 200

Marks: +1, -0

Determine the voltage (in V) of a battery connected to a parallel plate capacitor (filled with air) when the area of the plate is 10 square centimeters, the separation between the plates is 5 mm and the charged stored on the plates is 20 pC.

12.3
10.3
11.3
14.3

Validate

Solution:

Capacitor ‘c’

={6\A}/α

ε = Permittivity
A = cross section area of plate
d = distance between two plate

C=8.85×10^{-12}×1×{10×10^{-4}}/{5×10^{-3}}

=1.77×10^{-12}\F

q = cv

v={20×10^{-12}}/{1.77×10^{-12}}

= 11.3 volt

Go to Question:

Prev Question

Next Question