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Electrostatic and Capacitance

Electrostatic and Capacitance
The capacitance of a capacitor is not affected by

Thickness of plates
All of the listed here
Area of plates
Distance between plates

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Electrostatic and Capacitance
Paper condenser is

Always polarised
Usually of fixed value
Electrolytic condenser
None of the listed here

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

Mica
Glass
Paper
Air

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Electrostatic and Capacitance
For making a capacitor, it is better to select a dielectric having

Low permeability
High permeability
Permittivity same as that of air
Permittivity slightly more than that of air

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Electrostatic and Capacitance
The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value

45
42
54
37

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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

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

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