Two parallel conducting plates of area 
each are placed 6 mm apart and are both earthed. A third plate, identical with the first two, is placed at a distance of 2 mm from one of the earthed plates and is given a charge of 1 C. The potential of the central plate is.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
The plates 1 and 2 will form one capacitor and plates 2 and 3 will form another capacitor. These two capacitors are in parallel. Their effective capacitance is
Potential of central plate, 
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