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Electrostatic and Capacitance

Electrostatic and Capacitance
In the case of a lossy capacitor, its series equivalent resistance value will be

large
small
zero
very small

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Electrostatic and Capacitance
A 4.7 MΩ resistor is in series with a 0.015 µF capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?

35 ms
70.5 ms
352 ms
3.5 ms

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Electrostatic and Capacitance
The relative permittivity of free space is given by

1
2
10
100

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Electrostatic and Capacitance
Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the

Charge on the capacitor decreases
Voltage across the plates decreases
Voltage across the plates increases
Charge on the capacitor increases

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Electrostatic and Capacitance
A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be

25 times larger than before
5 times smaller than before
10 times greater than before
5 times greater than before

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Electrostatic and Capacitance
When the dielectric is homogeneous,the potential gradient is

Uniform
Non-uniform
Zero
None of the listed here

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