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Electrostatic and Capacitance

Electrostatic and Capacitance
A 0.47 µF capacitor is across a 2 kHz sine wave signal source. The capacitive reactance is

170 Ω
17 Ω
1.7 Ω
0.000169 Ω

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Electrostatic and Capacitance
The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.

37, final
62, final
37, initial
62, initial

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Electrostatic and Capacitance
Out of the following capacitors of identical rating which one will have the smallest dimensions ?

Mica capacitor
Ceramic capacitor
Paper capacitor
Aluminium foil capacitor

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Electrostatic and Capacitance
The units of volume charge density are

Coulomb/meter
Coulomb/meter
Coulomb/meter
Coulomb/meter

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Electrostatic and Capacitance
The capacitance of a capacitor is not affected by

Area of plates
All of the listed here
Distance between plates
Thickness of plates

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

Air
Mica
Ceramic
Paper

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