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Electrostatic and Capacitance

Electrostatic and Capacitance
Dielectric strength of a material depends on

moisture content
temperature
all of the listed here
thickness

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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
XC is inversely proportional to frequency and capacitance.

1

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Electrostatic and Capacitance
A 12 kHz voltage is applied to a 0.33 µF capacitor, and 200 mA of rms current is measured. What is the value of the voltage?

800 V
0.88 V
80 V
8 V

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Electrostatic and Capacitance
The sparking between two electrical contacts can be reduced by inserting a

resistance in line
capacitor in parallel with contacts
capacitor in series with each contact
None of these

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Electrostatic and Capacitance
Which of the following is not a vector ?

Electric potential
Angular momentum
Electric field
Linear momentum

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