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

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Electrostatic and Capacitance
In order to remove static electricity from machinery

humidify the surroundings
construct insulated cabins
insulate the machinery
ground the framework

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Electrostatic and Capacitance
A capacitor consists of two

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

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Electrostatic and Capacitance
A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is

0.8 F
0.6 F
0.12 F
0.024 F

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Electrostatic and Capacitance
When the dielectric is homogeneous,the potential gradient is

None of the listed here
Uniform
Non-uniform
Zero

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Electrostatic and Capacitance
The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.

62, initial
37, initial
37, final
62, final

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