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Electrostatic and Capacitance

Electrostatic and Capacitance
Air capacitors are generally available in the range

100 to 500 pF
10 to 400 pF
1 to 20 pF
200 to 300 pF

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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
62, initial
37, initial
62, final

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Electrostatic and Capacitance
Permittivity is expressed in

Farad/sq-m
Farad/meter
Weber/meter
Weber/sq-m

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

Ceases
Remains constant
Increases
Decreases

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Electrostatic and Capacitance
A unit tube of flux is known as tube

Newton
Michale
Farady
None of the listed here

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

Rolled Foil
Tubes
None of the listed here
Disc

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