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Electrostatic and Capacitance

Electrostatic and Capacitance
Dielectric constant for mica is nearly

3 to 8
200
100
1 to 2

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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 ?

50 times
300 times
100 times
150 times

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Electrostatic and Capacitance
An electrolytic capacitor can be used for

AC only
Both DC and AC
DC only
None of the listed here

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Electrostatic and Capacitance
In a cable capacitor, voltage gradient is maximum at the surface of the

Insulator
Sheath
Conduction
Earth

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Electrostatic and Capacitance
The dielectric constant is the ability of a material to establish an electric field.

1

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Electrostatic and Capacitance
A 2 µF, a 4 µF, and a 10 µF capacitor are connected in series. The total capacitance is less than

2 µF
10 µF
4 µF
1.5 µF

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