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Electrostatic and Capacitance

Electrostatic and Capacitance
If three 10 uF capacitors are connected in parallel, the net cararitance is

40 uF
30 uF
15 uF
20 uF

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Electrostatic and Capacitance
The dielectric constant is the ability of a material to establish an electric field.

1

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Electrostatic and Capacitance
Dielectric strength of mica is

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

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Electrostatic and Capacitance
The potential gradient across the material of low permittivity is than across the material of high permittivity.

smaller
greater
both (A) and (B)
None of these

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Electrostatic and Capacitance
A 10 µF, 20 µF, 22 µF, and 100 µF capacitor are in parallel. The total capacitance is

4.86 µF
152 µF
100 µF
2.43 µF

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Electrostatic and Capacitance
A 0.00022 F capacitor equals how many micro-farads?

220 µF
2,200 µF
22 µF
22,200 µF

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