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Electrostatic and Capacitance

Electrostatic and Capacitance
Permittivity is expressed in

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

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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

2 µF
4 µF
8 µF
1 µF

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

accurate value
low leakage reactance
stable operation
low losses

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Electrostatic and Capacitance
A condenser suitable for D.C. only is

Metallic paper capacitor
Poled aluminium electrolytic condenser
Oil impregnated paper condenser
Metallic plate variable gang condenser

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Electrostatic and Capacitance
A unit tube of flux is known as tube

None of the listed here
Farady
Newton
Michale

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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

0.4 s
1.2 s
0.8 s
0.6 s

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