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Online Tests
Physics Fsc Part 2 Chapter 1 Online Test MCQs With Answers
Question # 1
If the distance between two charges is halved and charges are also doubled, then force between them will be.
Choose an answer
Two time
Four time
Eight time
Sixteen time
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Question # 2
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 # 3
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 # 4
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, Then
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The charge in the plates reduces and potencial difference increase
Potencial difference between the plates increase, stored energy decreases and charge remains the same
Potencial difference between the plates decreases, stored energy decreases and charge remains unchanged
None of them
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Question # 5
Flux through any closed surface is:
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1/ε
2
∘
times the total charge enclosed in it
ε
2
∘
time the total charge enclosed in it
1/ε
∘
ties the total charge enclosed in ti
ε
∘
time the total charge enclosed in it
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Question # 6
A capacitor stores energy in the form of.
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Magnetic field
Heat energy
Electrical energy
Mechanical energy
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Question # 7
The force of Neutron due to field of 10
2
N/C is.
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1.6 x 10
-17
N
1.6 x 10
-19
N
Zero
1.6 x 10
-21
N
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Question # 8
The electrons in one coulomb change is equal to.
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1.6 x 10
-19
2.25 x 10
-19
6.25 x 10
-18
6.25 x 10
-19
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Question # 9
the force between two charge is 28 N. If paraffin wax of relative permittivity 2.8 is introduced between the charges as medium, then the force reduces to.
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25 N
20 N
10 N
15 N
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Question # 10
The electric field created by positive charge is
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Radially inward
Zero
Circular
Radially outward
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Question # 11
Selenium is a
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Insulator
Photoconductor
Conductor
First insulator then conductor
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Question # 12
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 # 13
Coulomb /volt is called.
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Farad
Ampere
Joule
Henry
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Question # 14
If the potential difference across two plates of capacitor is doubled, then energy stored in it will be.
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Two times
Eight times
Four times
Remain same
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Question # 15
The negative of the potential gradient is
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Electrostatic force
Electromotive force
Potential difference
Electric field intensity
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Question # 16
The quantity time constant RC has units of.
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Charge
Time
Capacitance
Resistance
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Question # 17
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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