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Electrostatic and Capacitance

Electrostatic and Capacitance
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is

0.6 s
1.2 s
0.8 s
0.4 s

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Electrostatic and Capacitance
A capacitor consists of

two insulators separated by a conductor
two conductors only
two conductors separated by an insulator
two insulators only

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Electrostatic and Capacitance
The dissipation factor of a good dielectric is of the order of

0.2
0.002
0.0002
2.0

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Electrostatic and Capacitance
The ability of charged bodies to exert force on 6ne another is attributed to the existence of

electric field
protons
neutrons
electrons

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Electrostatic and Capacitance
In order to remove static electricity from machinery

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

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Electrostatic and Capacitance
The sparking between two electrical contacts can be reduced by inserting a

resistance in line
capacitor in series with each contact
None of these
capacitor in parallel with contacts

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