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Electrostatic and Capacitance

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

1

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Electrostatic and Capacitance
A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current

Increases
Decreases
Ceases
Remains constant

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Electrostatic and Capacitance
The capacitor preferred for high frequency circuits is

Paper
None of the listed here
Air
Mica

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Electrostatic and Capacitance
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is

0.8 s
0.6 s
1.2 s
0.4 s

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Electrostatic and Capacitance
_______ field is associated with the capacitor.

None of the listed here
Magnetic
Electric
Both Electric & Magnetic

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

low leakage reactance
low losses
accurate value
stable operation

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