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Electrostatic and Capacitance

Electrostatic and Capacitance
Mica capacitors are characterised by all of the following except

low leakage reactance
stable operation
accurate value
low losses

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Electrostatic and Capacitance
For making a capacitor, it is better to select a dielectric having

Permittivity slightly more than that of air
High permeability
Low permeability
Permittivity same as that of air

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

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

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Electrostatic and Capacitance
Dielectric strength of mica is

50 to 200 kV/mm
30 to 50 kV/mm
300 to 500 kV/mm
10 to 20 kV/mm

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Electrostatic and Capacitance
The presence of an uncharged conductor near a charged one increases the

All of the listed here
Capacity of the charged conductor
Charge of the charged conductor
Potential of the charged conductor

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Electrostatic and Capacitance
One volt is the same as

one joule/coulomb
one joule
one coulomb/joule
one coulomb

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