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Electrostatic and Capacitance

Electrostatic and Capacitance
When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will

Decrease
Remains same
Increase
None of the listed here

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Electrostatic and Capacitance
The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.

62, final
37, final
37, initial
62, initial

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Electrostatic and Capacitance
Which of the following capacitors is polarized?

Mica
Electrolytic
Ceramic
Plastic-film

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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
The unit of capacitance is

Farady/m
Ohm
Hennry
Farady

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Electrostatic and Capacitance
When a dielectric is placed in an electric field the field strength

None of the listed here
Decrease
Remains same
Increase

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