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Electrostatic and Capacitance

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

Electrolytic
Air
Paper
Mica

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Electrostatic and Capacitance
Dielectric constant for mica is nearly

100
200
1 to 2
3 to 8

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Electrostatic and Capacitance
Which is the most superior dielectric out of the following ?

Bakelite
Paper
Glass
Air

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Electrostatic and Capacitance
A field line and an equipotential surface are

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

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Electrostatic and Capacitance
The dissipation factor of a good dielectric is of the order of

0.0002
0.2
0.002
2.0

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Electrostatic and Capacitance
The direction of electric field due +0 positive charge is .

both (A) and (B)
towards the charge
None of these
away from the charge

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