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Electrostatic and Capacitance

Electrostatic and Capacitance
A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is

0.6 F
0.12 F
0.8 F
0.024 F

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Electrostatic and Capacitance
To prevent the generation of static charges on rubber or flat leather

Conductive dressing is done
Surface is moistened
Talcum powder is sprayed on the surface
Oil compound dressing is done

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Electrostatic and Capacitance
The relative permittivity has the following units

F/m
m/F
Wb/m
no units

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Electrostatic and Capacitance
XC is inversely proportional to frequency and capacitance.

1

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

20 uF
15 uF
30 uF
40 uF

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Electrostatic and Capacitance
A capacitor of 0.02 µF is larger than

2,000 pF
All of these
200,000 pF
0.000020 F

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