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Electrostatic and Capacitance

Electrostatic and Capacitance
The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.

37, final
37, initial
62, final
62, initial

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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

10 µF
2 µF
1.5 µF
4 µF

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Electrostatic and Capacitance
A paper capacitor is usually available in the form of

Tubes
None of the listed here
Rolled Foil
Disc

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Electrostatic and Capacitance
What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?

It will melt
It will become magnetic
Its molecular structure will get changed
It will get punctured or cracked

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Electrostatic and Capacitance
An electrolytic capacitor is generally made to provide

Fixed capacitance
Variable capacitance
Large value of capacitance
Low capacitance

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

Air
Paper
Glass
Mica

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