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Electrostatic and Capacitance

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

3
2
0
1

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Electrostatic and Capacitance
A condenser suitable for D.C. only is

Poled aluminium electrolytic condenser
Oil impregnated paper condenser
Metallic plate variable gang condenser
Metallic paper capacitor

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Electrostatic and Capacitance
Which of the following capacitors preferred for high frequency circuits ?

Mica capacitor
Electrolytic capacitor
Air capacitor
None of these

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Electrostatic and Capacitance
Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the

Voltage across the plates increases
Charge on the capacitor decreases
Voltage across the plates decreases
Charge on the capacitor increases

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Electrostatic and Capacitance
A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?

Electrolytic Capacitor
Mica capacitor
Paper capacitor
All of the listed here

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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

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

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