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Electrostatic and Capacitance

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

Air capacitor
None of these
Mica capacitor
Electrolytic capacitor

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Electrostatic and Capacitance
1 volt/meter is same as

1 newton/meter
1 meter/coulomb
1 joule/coulomb
1 newton meter

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Electrostatic and Capacitance
The breakdown voltage for paper capacitors is usually

20 to 60 volts
more than 10000 volts
200 to 1600 volts
2000 to 3000 volts

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Electrostatic and Capacitance
A dielectric material must be

Resistor
Good conductor
Semi conductor
Insulator

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Electrostatic and Capacitance
The total deficiency or excess of electrons in a body is known as

Current
Charge
Voltage
Potential gradient

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

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

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