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Electrostatic and Capacitance

Electrostatic and Capacitance
The dielectric constant is the ability of a material to establish an electric field.

1

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Electrostatic and Capacitance
Electric intensity at any point in an electric field is equal to the at that point.

magnetic flux density
electric flux
potential gradient
None of these

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Electrostatic and Capacitance
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased

VR > VC
VR and VC = 0
VR = VC
VC > VR

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Electrostatic and Capacitance
Which of the following capacitors is marked for polarity ?

Mica
Paper
Electrolytic
Air

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Electrostatic and Capacitance
The dissipation factor of a good dielectric is of the order of

0.2
2.0
0.002
0.0002

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

22 µF
220 µF
22,200 µF
2,200 µF

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