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Electrostatic and Capacitance

Electrostatic and Capacitance
A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current

Increases
Remains constant
Decreases
Ceases

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Electrostatic and Capacitance
A field line and an equipotential surface are

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

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Electrostatic and Capacitance
Electric displacement is a______quantity.

None of the listed here
Scalar quantity
Both scalar & vector
Vector quantity

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Electrostatic and Capacitance
Of the following capacitors, which one has the highest dielectric constant?

Mica
Glass
Air
Paper

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Electrostatic and Capacitance
A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is

100 KV/m
30 KV/m
10 KV/m
50 KV/m

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Electrostatic and Capacitance
Paper capacitors usually have a tolerance of

± 10%
± 5%
None of the listed here
± 15%

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