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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, initial
37, final
62, final
62, initial

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Electrostatic and Capacitance
Paper capacitors usually have a tolerance of

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

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Electrostatic and Capacitance
The value of dielectric constant for vacuum is taken as

3
0
1
2

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Electrostatic and Capacitance
If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because

discharge current can flow
of high peak value
charging current can flow
varying voltage produces the charging and dicharging currents

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Electrostatic and Capacitance
Electric field intensity is a quantity

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

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Electrostatic and Capacitance
A 0.01 µF capacitor equals how many picofarads?

10,000 pF
100,000 pF
100 pF
1,000 pF

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