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Electrostatic and Capacitance

Electrostatic and Capacitance
Which of the following capacitors is marked for polarity ?

Air
Mica
Paper
Electrolytic

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Electrostatic and Capacitance
The capacitor preferred for high frequency circuits is

Air
Mica
Paper
None of the listed here

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Electrostatic and Capacitance
Permittivity is expressed in

Weber/sq-m
Weber/meter
Farad/sq-m
Farad/meter

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Electrostatic and Capacitance
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is

1.2 s
0.8 s
0.6 s
0.4 s

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Electrostatic and Capacitance
Capacitors can be used only for D.C.

Mica
Paper
Electrolytic
Air

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Electrostatic and Capacitance
The direction of electric field due +0 positive charge is .

None of these
towards the charge
away from the charge
both (A) and (B)

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