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Electrostatic and Capacitance

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
What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?

150 pF
200 pF
100 pF
50 pF

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Electrostatic and Capacitance
An electrolytic capacitor is generally made to provide

Variable capacitance
Fixed capacitance
Large value of 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
An uncharged capacitor and a 1 kΩ resistor are connected in series with a switch and a 6 V battery. At the instant the switch is closed, the voltage across the capacitor is

2 V
0 V
3 V
6 V

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

Mica
Paper
Glass
Air

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