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Electrostatic and Capacitance

Electrostatic and Capacitance
The force between two charges is 120 N. If the distance between the charges is doubled, the force will be

60 N
120 N
30 N
40 N

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Electrostatic and Capacitance
Air capacitors are generally available in the range

100 to 500 pF
1 to 20 pF
200 to 300 pF
10 to 400 pF

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Electrostatic and Capacitance
Two series capacitors (one 2 µF, the other of unknown value) are charged from a 24 V source. The 2 µF capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is

8 µF
2 µF
4 µF
1 µF

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Electrostatic and Capacitance
Dielectric strength of medium

None of the listed here
Increases with rise in temperature
Is same for all insulating materials
Increases with moisture content

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

Electrolytic
Paper
Air
Mica

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Electrostatic and Capacitance
A unit tube of flux is known as tube

Newton
Michale
Farady
None of the listed here

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MORE MCQ ON Electrostatic and Capacitance

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