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Electrostatic and Capacitance

Electrostatic and Capacitance
is that property of a capacitor which delays any change of voltage across it.

Inductance
None of these
Potential gradient
Capacitance

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Electrostatic and Capacitance
Air capacitors are generally available in the range

100 to 500 pF
10 to 400 pF
1 to 20 pF
200 to 300 pF

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Electrostatic and Capacitance
The relative permittivity of free space is given by

10
100
1
2

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Electrostatic and Capacitance
Out of the following capacitors of identical rating which one will have the smallest dimensions ?

Aluminium foil capacitor
Ceramic capacitor
Mica capacitor
Paper capacitor

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Electrostatic and Capacitance
If a third equal and similar charge is placed between two equal and similar charges, then this third charge will

be in unstable equilibrium
move out of the field of influence of the two charges
remain in stable equilibrium
not be in equilibrium

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

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

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