Electric Circuits
If the sheet of a backelite is inserted between the plates of an air capacitor, the capacitance will

 remains unchanged.
 increase.
 decrease.
 becomes zero.

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Electric Circuits
What is time period T?

 Time taken by an alternating quantity to complete the (+)ve half.
 Time taken by an alternating quantity to reach the peak value.
 Time taken by an alternating quantity to complete the (-)ve half.
 Time taken by an alternating quantity to complete one full cycle.

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