Question 28: NCERT Solutions for 12th Class Physics: Chapter 2-Electrostatic Potential and Capacitance
Show that the force on each plate of a parallel plate capacitor has magnitude equal to
QE, where Q is the charge on the capacitor, and E is the magnitude of electric field between the plates. Explain the origin of the factor
Solution:
Magnitude of electric field between the


plates of charged capacitor is
However, magnitude of electric field of one plate or! the other plate of charged capacitor is
So, force on the one plate of charged capacitor due to the other is
The factor


is because the electric field of one 2 plate on the other plate of charged capacitor is
of the resultant electric field E between the 2 plates of charged capacitor.
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 2-Electrostatic Potential and Capacitance