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Electrostatic and Capacitance

Electrostatic and Capacitance
The value of E within the field due to a point charge can be found with the help of

Kirchhoff's laws
None of these
Faraday’s laws
Coulomb’s laws

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Electrostatic and Capacitance
A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is

50 joules
200 joules
250 joules
150 joules

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Electrostatic and Capacitance
In order to remove static electricity from machinery

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

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Electrostatic and Capacitance
Mica capacitors are characterised by all of the following except

stable operation
low leakage reactance
low losses
accurate value

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Electrostatic and Capacitance
If three 10 uF capacitors are connected in parallel, the net cararitance is

15 uF
40 uF
20 uF
30 uF

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Electrostatic and Capacitance
In a cable capacitor, voltage gradient is maximum at the surface of the

Earth
Insulator
Conduction
Sheath

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