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Electrostatic and Capacitance

Electrostatic and Capacitance
Capacitors are mainly used for radio frequency tuning.

Mica
Electrolytic
Air
Paper

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Electrostatic and Capacitance
The absolute permittivity of free space is given by

8.854 x 1(T10 F/m)
8.854 x 10?12 F/m
8.854 x KT11 F/m
8.854 x 1(T9 F/m)

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Electrostatic and Capacitance
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is

Open-circuit
Short-circuit
Alright
Leaky

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Electrostatic and Capacitance
The property of a capacitor to store electricity is called its

charge
None of these
capacitance
energy

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Electrostatic and Capacitance
Dielectric strength of medium

Increases with rise in temperature
None of the listed here
Is same for all insulating materials
Increases with moisture content

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Electrostatic and Capacitance
Which of the following materials has the highest value of dielectric constant?

Glass
Ceramic
Paper
Mica

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