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ELECTRIC CIRCUITS

Electric Circuits
Which resistor will be physically larger in size?

 1 k Ω, 1 W.
 10 Ω, 50 W.
 1 M Ω, 1/2 W.
 100 Ω, 10 W.

ANSWER DOWNLOAD EXAMIANS APP

Electric Circuits
The energy stored by a capacitor is given by

 1/2 QV.
 Q2 / 2C.
 all of them.
 1/2 CV2.

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Electric Circuits
The capacitance of a parallel plate capacitor can be varied by

All of these
 changing the overlapping area of the plates only.
 changing the distance between the plates only.
 changing the dielectric medium only.

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Electric Circuits
The power dissipated in a pure capacitor is

 proportional to applied voltage.
 zero.
 both (B) and (C) above.
 proportional to the value of capacitance.

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Electric Circuits
If the dielectric of a capacitor is replaced by conducting material

 the capacitance value of the plate will decrease.
 the capacitor will get heated up due to eddy currents.
 the plate will get short circuited.
 the capacitor can store infinite charge.

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