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Electrostatic and Capacitance

Electrostatic and Capacitance
capacitors are used in transistor circuits.

Paper
Electrolytic
Ceramic
Air

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Electrostatic and Capacitance
The dielectric constant (relative permittivity) of glass is given by

0.1 to 0.4
2.0 to 4.0
5 to 100
0.5 to 1.0

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Electrostatic and Capacitance
A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current

Ceases
Remains constant
Decreases
Increases

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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
Both will have identical value of capacitance
Mica capacitor
Ceramic capacitor

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Electrostatic and Capacitance
XC is inversely proportional to frequency and capacitance.

1

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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

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

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