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Electrostatic and Capacitance

Electrostatic and Capacitance
The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as

Chemical effect
Induction
Photoelectric effect
Magnetic effect

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Electrostatic and Capacitance
Electric field intensity is a quantity

Scalar quantity
None of the listed here
Both Vector & Scalar quantity
Vector quantity

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Electrostatic and Capacitance
Mica capacitors are characterised by all of the following except

low losses
accurate value
low leakage reactance
stable operation

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

20 uF
30 uF
40 uF
15 uF

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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 ?

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

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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?

352 ms
3.5 ms
35 ms
70.5 ms

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