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Online Tests
Physics Fsc Part 2 Chapter 2 Online Test MCQs With Answers
Question # 1
The product of resistance and conductance is
Choose an answer
1
Resistivity
Conductance
Zero
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Question # 2
A rheostat can be used as variable resistor as well as a-------------
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Potential divider
Current divider
Wheat stone bridge
Power divider
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Question # 3
A certain wire has a resistance R, the resistivity of an other wire of an identical material with the first, except for twice its diameter is.
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1/4 R
4R
2R
Same as R
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Question # 4
Heat sensitive resistors are called.
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resistors
Capacitor
Thermistors
Inductors
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Question # 5
The unit of resistance is:
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Ω
Ωm
Ω
-1
m
-1
Ωm
-1
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Question # 6
Potentiometer is used to.
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Compare emf of two cells
Detect internal resistance of cell
Measure P.D.
All of these
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Question # 7
The head produced by the passage of current through a resistor is.
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H= I
2
Rt
H = IR
2
t
H = 1/Rt
H = I
2
/Rt
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Question # 8
One ohm is equal to
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VC-1
CV-1
AC-1
VA
-1
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Question # 9
The thermistors convert changes of temperature into.
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Light energy
Electric voltage
Heat
Sound
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Question # 10
If 1 x 10
7
electrons passes through a conductor in 1.0 micro second , then the current is.
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2 A
1.6 A
2.6 x 10
-6
A
1.6 x 10
-6
A
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Question # 11
The algebraic sum of potential change in a closed circuit is zero.
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Kirchhoff's 1st rule
Kirchhoff 2
nd
rule
Krichoff's 3
rd
rule
Kirchhoff 4
th
rule
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Question # 12
The unit of conductivity is:
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Ohm
-3
m
-1
Ohm m
-1
Both a and b
Ohm m
-1
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Question # 13
Semiconductor diodes are called:
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Ohmic
non ohmic
Both a & b
none of above
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Question # 14
The Kirchhoff 1
st
rule is manifestation of:
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Law of conservation of mass
Law of Conservation of charge
Law of conservation of energy
None of above
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Question # 15
The free electrons experience force.
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In direction of -E
In direction of E
Both A and B
All of the above
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Question # 16
For non-ohmic devices, the graph between V and I is
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Not a straight line
A straight line
A curve
All of above
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Question # 17
For ohmic device the graph between V and I is.
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A straight line
Curve
Hyperbola
Parabola
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Question # 18
5 A of current flows through a conductor in 2 minutes, charge in the wire is.
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500 C
600 C
400 C
10 C
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