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Electrostatic and Capacitance

Electrostatic and Capacitance
capacitors are used in transistor circuits.

Air
Paper
Ceramic
Electrolytic

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Electrostatic and Capacitance
One volt is the same as

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

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Electrostatic and Capacitance
The units of capacitance are

Hennry
Coulomb/volt
Hennry/wb
Volt/coulomb

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Electrostatic and Capacitance
Which of the following capacitors is polarized?

Mica
Electrolytic
Plastic-film
Ceramic

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Electrostatic and Capacitance
The potential gradient across the material of low permittivity is than across the material of high permittivity.

None of these
smaller
greater
both (A) and (B)

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Electrostatic and Capacitance
A 12 kHz voltage is applied to a 0.33 µF capacitor, and 200 mA of rms current is measured. What is the value of the voltage?

8 V
0.88 V
80 V
800 V

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