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Electrostatic and Capacitance

Electrostatic and Capacitance
Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as

milli-coulomb
micro-coulomb
coulomb
pico-coulomb

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Electrostatic and Capacitance
Dielectric strength of a medium is usually expressed in

N/mm
KV/mm
None of the listed here
C/mm

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

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

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Electrostatic and Capacitance
If a third equal and similar charge is placed between two equal and similar charges, then this third charge will

be in unstable equilibrium
remain in stable equilibrium
move out of the field of influence of the two charges
not be in equilibrium

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

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

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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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MORE MCQ ON Electrostatic and Capacitance

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