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Physics ICS Part 2 Chapter 12 Online MCQ's Test MCQs With Answers
Question # 1
Special organs called ampullae of lorenzenite are present in.
Choose an answer
Bats
Cats
Dogs
Sharks
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Question # 2
If the potential difference across two plates of capacitor is doubled, then energy stored in it will be.
Choose an answer
Two times
Eight times
Four times
Remain same
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Question # 3
Coulomb /volt is called.
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Farad
Ampere
Joule
Henry
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Question # 4
Closeness of the electric field lines is the measure of.
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Direction of field
Strength of field
Potential difference
Uniformity of field
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Question # 5
Two metallic sphere of radius 2 cm and 4 cm get equal quantity of charge. Which has greater surface charge density ?
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2
nd
sphere
Both have same
First sphere
None of these
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Question # 6
The number of electrons in one coulomb charge is equal to
Choose an answer
6.2 x 10
18
electrons
Zero electrons
1.6 x 10
-22
electrons
6.2 x 10
21
electrons
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Question # 7
If the medium between the charges is not free space then electrostatic force will.be
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Increase
Decrease
Remain same
None of these
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Question # 8
One electron volt is equal to.
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1.6 x 10
-19
Joule
1.6 x 10
-19
Coulomb
1.6 x 10
-12
N
1.6 x 10
18
Joule
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Question # 9
The electric field in some region of of space is uniform in magnitude and direction. Which one of the following five statements best desccribes the volume charge density (
ρ
) , in this region of space?
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ρ = 0
ρ decreases linearly in the direction of the electric field
ρ increases linearly in the direction of the electric field
ρ has a uniform value throughout the region
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Question # 10
Capacitance of a capacitor does not depend upon.
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Distance between plates
Area of plates
Electric field between plates
Medium between plates
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Question # 11
If both the magnitude of charges and distance between them is doubled, then coulomb's force will be.
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Doubled
Hlaf
Remain same
One fourth
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Question # 12
An ECG records the _____ between points on human skin generated by electric process i the heart.
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Heart beat
Pulse rate
Pressure
Voltage
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Question # 13
if time constant in RC series circuit is small, then capacitor is charged or discharged.
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Slowly
Rapidly
At constant rate
Intermittently
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Question # 14
The electrostatic force between two charges is 42 N, If we place a dielectric of E
y
=2.1 between the charges then the force become equal to.
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42 N
88.2 N
20 N
2 N
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Question # 15
A charge on 4 coulomb is in the field of intensity 4N/C the force on the charge is.
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Uniform
Non uniform
Weak
Strong
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Question # 16
Total flux through a closed surface depends on.
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Shape of surface
Medium only
Charge enclosed only
Charge and Medium
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Question # 17
A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:
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q=Q/4
q=Q/2
q=Q
None of these
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Question # 18
Force per unit charge is called:
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Gravitational force
Electric field intensity
Coulomb's force
None of these
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