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Electrostatic and Capacitance

Electrostatic and Capacitance
The value of dielectric constant for vacuum is taken as

1
2
3
0

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Electrostatic and Capacitance
Of the following capacitors, which one has the highest dielectric constant?

Mica
Paper
Air
Glass

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Electrostatic and Capacitance
The sparking between two electrical contacts can be reduced by inserting a

None of these
capacitor in series with each contact
resistance in line
capacitor in parallel with contacts

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Electrostatic and Capacitance
The capacitance of a capacitor is not affected by

All of the listed here
Distance between plates
Thickness of plates
Area of plates

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Electrostatic and Capacitance
The ohmmeter reading for a short circuited capacitor is

Zero
Few kilo ohm
Infinity
None of the listed here

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Electrostatic and Capacitance
What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?

It will melt
It will get punctured or cracked
It will become magnetic
Its molecular structure will get changed

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