Electric Circuits
A parallel plate capacitor with air as dielectric, force between plate is F. If capacitor is now immersed water of dielectric εr, force between plate will be –

 εr/F.
 0.
 F.
 F εr.

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Electric Circuits
What is called a cycle in case of AC operation ?

  When ac goes through a complete (+)ve to (-)ve, is called a cycle.
 When ac completes the (+)ve half, is called a cycle.
 When an alternating quantity completes the (–)ve cycle, is called a cycle.
 Option A and C both.

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