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Electrostatic and Capacitance

Electrostatic and Capacitance
A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is

100 KV/m
10 KV/m
30 KV/m
50 KV/m

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Electrostatic and Capacitance
The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be

1200 N/C
2000 N/C
800 N/C
1600 N/C

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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
The number of Faraday tubes of flux passing through a surface in an electric field is called

Magnetic flux density
Electric flux
Electric flux density
Electric intensity

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Electrostatic and Capacitance
A capacitor consists of two

Insulators separated by a dielectric
None of the listed here
Conductors separated by an insulator
Ceramic plates and one mica disc

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Electrostatic and Capacitance
Dielectric strength of medium

Is same for all insulating materials
None of the listed here
Increases with moisture content
Increases with rise in temperature

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