
Capacitor 1st July
Authored by sonu g
Physics
12th Grade
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11 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following statement is true?
Electrostatic force is a conservative force.
Potential at a point is the work done per unit charge in bringing a charge from any point to infinity
Electrostatic force is non-conservative
Potential is the product of charge and work.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Equipotential surfaces
are closer in regions of large electric fields compared to regions of lower electric fields.
will be more crowded near sharp edges of a conductor.
will always be equally spaced.
both (a) and (b) are correct.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A proton moves 10 cm on a path in the direction of a uniform electric field of strength 3.0 N/C. How much work is done on the proton by the electrical field?
4.8 x 10-20 J
-4.8 x 10-20 J
.6 x 10-20 J
zero
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A 9.0-V battery is connected between two parallel metal plates 4.0 mm apart. What is the magnitude of the electric field between the plates?
2.3 x 103 N/C
9.0 N/C
2.3 N/C
0.75 x 10-6 N/C
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A parallel-plate capacitor has a capacitance of 20 µF. What potential difference across the plates is required to store 7.2 x 10-4 C on this capacitor?
36 V
2.2 x 10-2 V
1.4 x 10-8 V
68 V
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Increasing the separation of the two charged parallel plates of a capacitor, which are disconnected from a battery, will produce what effect on the capacitor?
increase charge
decrease charge
increase capacitance
decrease capacitance
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Three capacitors of 1.0 µF, 1.5 µF, and 2.0 µF are connected in series. Find the combined capacitance.
4.5 µF
4.0 µF
2.2 µF
0.46 µF
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