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Which among the following is the correct expression for force between the plates of a parallel plate capacitor?(a) F=epsilon*A*(V/x)^2/2(b) F=epsilon*A*(V/x)^2/3(c) F=epsilon (V/x)^2/2(d) F=epsilon (V/x)^2/3I had been asked this question in exam.This intriguing question originated from Force of Attraction Between Oppositely Charged Plates topic in portion Capacitance and Capacitors of Basic Electrical Engineering |
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Answer» RIGHT option is (a) F=epsilon*A*(V/x)^2/2 The best EXPLANATION: The force is proportional to the square of the potential GRADIENT and the area. HENCE the force F=epsilon*A*(V/x)^2/2. |
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