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Electrostatic and Capacitance

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

Disc
Rolled Foil
Tubes
None of the listed here

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Electrostatic and Capacitance
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased

VR and VC = 0
VR > VC
VC > VR
VR = VC

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Electrostatic and Capacitance
Dielectric strength of mica is

10 to 20 kV/mm
50 to 200 kV/mm
300 to 500 kV/mm
30 to 50 kV/mm

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Electrostatic and Capacitance
The presence of an uncharged conductor near a charged one increases the

Charge of the charged conductor
Potential of the charged conductor
Capacity of the charged conductor
All of the listed here

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Electrostatic and Capacitance
The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by

R/C
1/RC
C/R
RC

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Electrostatic and Capacitance
If three 15 uF capacitors are connected in series, the net capacitance is

5 uF
10 uF
20 uF
15 uF

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MORE MCQ ON Electrostatic and Capacitance

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