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Electrostatic and Capacitance

Electrostatic and Capacitance
Paper capacitors usually have a tolerance of

None of the listed here
± 15%
± 5%
± 10%

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Electrostatic and Capacitance
Dielectric strength of mica is

300 to 500 kV/mm
30 to 50 kV/mm
50 to 200 kV/mm
10 to 20 kV/mm

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Electrostatic and Capacitance
A capacitor consists of two

Insulators separated by a dielectric
Conductors separated by an insulator
Ceramic plates and one mica disc
None of the listed here

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Electrostatic and Capacitance
Two series capacitors (one 2 µF, the other of unknown value) are charged from a 24 V source. The 2 µF capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is

4 µF
8 µF
2 µF
1 µF

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Electrostatic and Capacitance
What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?

50 pF
150 pF
200 pF
100 pF

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Electrostatic and Capacitance
A dielectric material must be

Insulator
Resistor
Good conductor
Semi conductor

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