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Electrostatic and Capacitance

Electrostatic and Capacitance
Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?

300 times
150 times
50 times
100 times

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Electrostatic and Capacitance
Which of the following capacitors preferred for high frequency circuits ?

Mica capacitor
None of these
Air capacitor
Electrolytic capacitor

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Electrostatic and Capacitance
A field line and an equipotential surface are

None of these
always at 90°
always parallel
inclined at any angle 0

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

Aluminium foil capacitor
Ceramic capacitor
Mica capacitor
Paper capacitor

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Electrostatic and Capacitance
The total deficiency or excess of electrons in a body is known as

Current
Potential gradient
Charge
Voltage

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Electrostatic and Capacitance
Dielectric strength of a medium is usually expressed in

None of the listed here
N/mm
C/mm
KV/mm

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