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Question

How does inserting a dielectric between plates increase the capacitor’s stability?

A
The attractive force on plates makes the capacitor unstable. Dielectric gives support for the plates.
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B
The dielectric gives more voltage capacity.
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C
The dielectrics have higher relative permittivity than air.
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D
None of these
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Solution

The correct option is A The attractive force on plates makes the capacitor unstable. Dielectric gives support for the plates.
Obviously if there is a physical object providing a normal reaction to the plates, then the net force on the plates become zero and the capacitor become stable.

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