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Physics FSC Part 2 Chapter 13 Online MCQ's Test MCQs With Answers
Question # 1
The free electrons experience force.
Choose an answer
In direction of -E
In direction of E
Both A and B
All of the above
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Question # 2
mho -m-1 is the unit of.
Choose an answer
Resistance
Resistivity
Conductance
Conductivity
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Question # 3
The value of maximum output power is?
Choose an answer
E/4R
E
2
/4R
E/4R
2
Non of above
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Question # 4
For non-ohmic devices, the graph between V and I is
Choose an answer
Not a straight line
A straight line
A curve
All of above
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Question # 5
The unit of resistance is:
Choose an answer
Ω
Ωm
Ω
-1
m
-1
Ωm
-1
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Question # 6
When a pot difference of 4 volt is applied across resistance, 10 J of energy is converted Find charge flows
Choose an answer
0.20 C
2.5 C
5.0 C
10.0 C
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Question # 7
The powers of two electric bulbs are 100w and 200w. Which are connected to power supply of 220 V. The ratio of resistance of their filament will be:
Choose an answer
1
:2
2
:1
1
:3
4
:3
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Question # 8
Ampere second stands for the unit of.
Choose an answer
Charge
emf
energy
Power
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Question # 9
If the resistance of 500 Ohm have fourth band of silver colour then its upper maximum resistance will be.
Choose an answer
600 Ohm
550 Ohm
450 Ohm
400 Ohm
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Question # 10
The thermistors convert changes of temperature into.
Choose an answer
Light energy
Electric voltage
Heat
Sound
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Question # 11
If 1 x 10
7
electrons passes through a conductor in 1.0 micro second , then the current is.
Choose an answer
2 A
1.6 A
2.6 x 10
-6
A
1.6 x 10
-6
A
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Question # 12
What is the resistance of carbon resistor which has band brown black brown.
Choose an answer
100 Ohm
1000 Ohm
10 Ohm
1.0 Ohm
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Question # 13
The drift velocity is of order:
Choose an answer
10
-13
m/s
10
3
m/s
10
-3
m/s
10
-4
m/s
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Question # 14
Resistivity at a given temperature depends upon.
Choose an answer
Area of cross section
Length
Nature of material of conductor
Both length and area
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Question # 15
Heat energy is converted into electrical energy.
Choose an answer
Solar cells
thermocouples
Electric generators
None of above
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Question # 16
If there is no fourth band, tolerance is shows as
Choose an answer
10%
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Question # 17
Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:
Choose an answer
3Ω
4Ω
4.5Ω
5Ω
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Question # 18
For ohmic device the graph between V and I is.
Choose an answer
A straight line
Curve
Hyperbola
Parabola
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