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Electrostatic and Capacitance

Electrostatic and Capacitance
When the voltage across a capacitor is tripled, the stored charge

Is cut to one-third
Stays the same
Doubles
Triples

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Electrostatic and Capacitance
is that property of a capacitor which delays any change of voltage across it.

Potential gradient
None of these
Inductance
Capacitance

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

low leakage reactance
accurate value
stable operation
low losses

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Electrostatic and Capacitance
Capacitors are mainly used for radio frequency tuning.

Paper
Air
Electrolytic
Mica

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Electrostatic and Capacitance
Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is

1.5 x 1015 m/s2
1.76 x 1015 m/s2
0.56 x 1015 m/s2
1.6 x 1015 m/s2

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

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

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