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Electrostatic and Capacitance

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
The property of a capacitor to store electricity is called its

charge
energy
capacitance
None of these

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Electrostatic and Capacitance
The electric field at a point situated at a distance d from straight charged conductor is

Inversely proportional to d
None of the listed here
proportional to d
Inversely proportional to d

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Electrostatic and Capacitance
The unit of dielectric strength is given by

V2/m
V/m
m/V
m/V2

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

0.000169 Ω
170 Ω
17 Ω
1.7 Ω

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

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

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