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Physics ICS Part 2 Chapter 12 Online MCQ's Test MCQs With Answers
Question # 1
Some charge is being given to a conductor. Then its potencial
Choose an answer
Its maximum at surface
Its maximum at Its maximum at center
Is remain same throughout the conductor
Is maximum somewhere between surface and centre
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Question # 2
One of the applications of electrostatic induction is
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Laser
Photocopier
X ray machine
Wilson cloud chamber
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Question # 3
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 # 4
The electric flux through closed surface depends upon
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Charge
Medium
Geometry
Charge and Medium
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Question # 5
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 # 6
The number of lines per unit area passing perpendicular through an area is called
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Flux
Electric intensity
Both (a) , (b)
None of these
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Question # 7
The amount of energy equal to 1.6 x 10
-18
J is called.
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One volt
One milli volt
One electron volt
One mega electron volt
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Question # 8
Electric field intensity at a point is defined by the relation.
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E= q/F
E = F/q
E = qF
E = F/q2
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Question # 9
Electric potencial of earth is taken to be zero because the earth is good:
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Semiconductor
Conductor
Insulator
Dielectric
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Question # 10
The "toner" of photocopier is given:
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Positive charge
Negative charge
Remains neutral
All of above
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Question # 11
Electric intensity due to an infinite sheet of charge is:
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∂/2ε
∘
∂/rε
∘
∂/r2ε
∘
none of these
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Question # 12
In Millikan's oil drop experiment a charged particle of mass 'm' is in equilibrium in an will
Choose an answer
Zero
g/2
g
2g
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Question # 13
When some di electric is inserted between the plates of a capacitor, then capacitance.
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Decreases
Increases
Becomes zero
Becomes infinity
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Question # 14
The process of copying is:
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Axillugraphy
Chromatography
Xerography
Spectrography
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Question # 15
The electric potential at a mid point in an electric dipole is.
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0 V
0.5 V
1 V
1.5 V
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Question # 16
Electric flux is a:
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Scalar quantity
Vector quantity
Variable quantity
None of these
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Question # 17
NC-1 is the SI unit is
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Force
Charge
Current
Electric intensity
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Question # 18
Electron volt is the unit of.
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Potential
Potential difference
Electric current
Electric energy
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