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Electrostatic and Capacitance

Electrostatic and Capacitance
Which of the following expression is correct for electric field strength ?

E = D/€
E = jtD
None of the listed here
E = D2/t

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

Air
Paper
Mica
Glass

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Electrostatic and Capacitance
Capacitors are used for audio frequency and radio frequency coupling and tuning

Mica
Ceramic
Paper
Air

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Electrostatic and Capacitance
An electrolytic capacitor is generally made to provide

Low capacitance
Large value of capacitance
Variable capacitance
Fixed capacitance

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

Inductance
Capacitance
Potential gradient
None of these

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Electrostatic and Capacitance
The breakdown voltage for paper capacitors is usually

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

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