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Electrostatic and Capacitance

Electrostatic and Capacitance
Two 0.68 µF capacitors are connected in series across a 10 kHz sine wave signal source. The total capacitive reactance is

4.68 Ω
11.70 Ω
23.41 Ω
46.8 Ω

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Electrostatic and Capacitance
For closer tolerances which of the following capacitors is usually preferred ?

Mica capacitor
None of these
Ceramic disc capacitor
Paper capacitor

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Electrostatic and Capacitance
Four 0.15 µF capacitors are in parallel. The total capacitance is

0.8 µF
0.30 µF
0.6 µF
0.15 µF

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Electrostatic and Capacitance
Electric displacement is a______quantity.

Both scalar & vector
Vector quantity
None of the listed here
Scalar quantity

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Electrostatic and Capacitance
A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be

25 times larger than before
10 times greater than before
5 times greater than before
5 times smaller than before

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Electrostatic and Capacitance
Permittivity is expressed in

Weber/meter
Weber/sq-m
Farad/sq-m
Farad/meter

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