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Electrostatic and Capacitance

Electrostatic and Capacitance
_______ field is associated with the capacitor.

Both Electric & Magnetic
Magnetic
None of the listed here
Electric

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Electrostatic and Capacitance
Permittivity is expressed in

Weber/sq-m
Farad/sq-m
Farad/meter
Weber/meter

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Electrostatic and Capacitance
The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be

36 x 10 fa
36 x 107 N
36 x 109 N
36 x 108 N

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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

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

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Electrostatic and Capacitance
Capacitors are mainly used for radio frequency tuning.

Mica
Paper
Air
Electrolytic

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Electrostatic and Capacitance
The relative permittivity of free space is given by

1
100
2
10

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