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Electrostatic and Capacitance

Electrostatic and Capacitance
Dielectric strength of mica is

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

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

accurate value
low losses
stable operation
low leakage reactance

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Electrostatic and Capacitance
The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by

R/C
1/RC
C/R
RC

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Electrostatic and Capacitance
A capacitor consists of

two conductors separated by an insulator
two insulators separated by a conductor
two insulators only
two conductors only

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Electrostatic and Capacitance
Dielectric strength of a medium is usually expressed in

None of the listed here
C/mm
KV/mm
N/mm

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Electrostatic and Capacitance
The unit of capacitance is

Hennry
Farady/m
Farady
Ohm

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