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Electrostatic and Capacitance

Electrostatic and Capacitance
Permittivity is expressed in

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

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Electrostatic and Capacitance
An electrolytic capacitor is generally made to provide

Variable capacitance
Large value of capacitance
Fixed capacitance
Low capacitance

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Electrostatic and Capacitance
The units of volume charge density are

Coulomb/meter
Coulomb/meter
Coulomb/meter
Coulomb/meter

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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

RC
1/RC
C/R
R/C

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Electrostatic and Capacitance
An electrolytic capacitor can be used for

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

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Electrostatic and Capacitance
Two series capacitors (one 2 µF, the other of unknown value) are charged from a 24 V source. The 2 µF capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is

1 µF
8 µF
4 µF
2 µF

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