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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
Magnetic effect
Photoelectric effect

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Electrostatic and Capacitance
Which of the following capacitors is marked for polarity ?

Electrolytic
Air
Mica
Paper

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Electrostatic and Capacitance
Two series capacitors (one 2 µF, the other of unknown value) are charged from a 24 V source. The 2 µF capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is

8 µF
1 µF
4 µF
2 µF

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Electrostatic and Capacitance
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is

0.8 s
1.2 s
0.4 s
0.6 s

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Electrostatic and Capacitance
One volt is the same as

one joule
one coulomb/joule
one coulomb
one joule/coulomb

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Electrostatic and Capacitance
A field line and an equipotential surface are

always at 90°
always parallel
inclined at any angle 0
None of these

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