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Electrostatic and Capacitance

Electrostatic and Capacitance
A 220 Ω resistor is in series with a 2.2 µF capacitor. The time constant is

24 µs
2.42 µs
48 µs
480 µs

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Electrostatic and Capacitance
Air capacitors are generally available in the range

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

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Electrostatic and Capacitance
Mica capacitors are characterised by all of the following except

low losses
stable operation
low leakage reactance
accurate value

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Electrostatic and Capacitance
Capacitors can be used only for D.C.

Air
Paper
Mica
Electrolytic

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Electrostatic and Capacitance
One volt is the same as

one joule
one coulomb/joule
one coulomb
one joule/coulomb

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Electrostatic and Capacitance
A capacitor of 0.02 µF is larger than

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

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