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Electrostatic and Capacitance

Electrostatic and Capacitance
A 0.01 µF capacitor equals how many picofarads?

100 pF
10,000 pF
100,000 pF
1,000 pF

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Electrostatic and Capacitance
Which of the following capacitors will have the least variation?

Ceramic capacitor
Silver plate mica capacitor
None of the listed here
Paper capacitor

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Electrostatic and Capacitance
The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by

RC
1/RC
C/R
R/C

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

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Electrostatic and Capacitance
A 0.00022 F capacitor equals how many micro-farads?

2,200 µF
22 µF
22,200 µF
220 µF

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Electrostatic and Capacitance
A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is

62 x 105 V/m
72 x 105 V/m
82 x 105 V/m
92 x 105 V/m

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