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Electrostatic and Capacitance

Electrostatic and Capacitance
Which is the most superior dielectric out of the following ?

Glass
Bakelite
Paper
Air

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

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Electrostatic and Capacitance
An electrolytic capacitor is generally made to provide

Large value of capacitance
Low capacitance
Fixed capacitance
Variable capacitance

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Electrostatic and Capacitance
Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?

100 times
50 times
150 times
300 times

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Electrostatic and Capacitance
"The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed".The above statement is associated with

Coulomb’s square law
Maxwell’s second law
Gauss’s law
Maxwell’s first law

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Electrostatic and Capacitance
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?

It depends on applied voltage
Mica capacitor
Both will have identical value of capacitance
Ceramic capacitor

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