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Electrostatic and Capacitance

Electrostatic and Capacitance
A capacitor of 2,000 pF is greater than

0.0000002 F
0.002 µF
0.0002 µF
0.02 µF

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Electrostatic and Capacitance
A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be

25 times larger than before
5 times smaller than before
10 times greater than before
5 times greater than before

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Electrostatic and Capacitance
For which of the following parameter variation, the capacitance of the capacitor remains unaffected ?

Nature of dielectric
Thickness of the plates
Area of the plates
Distance between plates

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Electrostatic and Capacitance
The unit of dielectric strength is given by

m/V
V2/m
V/m
m/V2

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

30 uF
40 uF
15 uF
20 uF

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Electrostatic and Capacitance
This mention statement is associated with "The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface".

Gauss's law
Lenz's law
Faraday's law
Kirchhoff's law

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