Which of the following statements are correct?
a) When capacitors are connected in parallel the effective capacitance is less than the individual capacitances
b) The capacitances of a parallel plate capacitor can be increased by decreasing the separation plates
c) When capacitors are connected in series the effective capacitance is less than the least of the individual capacities
d) In a parallel plate capacitor the electrostatic energy is stored on the plates

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a and c

b and c

a and b

c and d

answer is D.

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Detailed Solution

When capacitors are connected in parallel the effective capacitance is sum of the individual capacitances.

The capacitances of a parallel plate capacitor can be increased by decreasing the separation plates.

When capacitors are connected in series, the total capacitance is less than any one of the series capacitor's individual capacitances.

In a parallel plate capacitor the electrostatic energy is stored in the field between the plates.

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