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Online Tests
Physics Fsc Part 2 Chapter 2 Online Test MCQs With Answers
Question # 1
Magnetic effect of current is used in.
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Toaster
Electric iron
Electric motor
D.C. Battery
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Question # 2
Thermosouple is an arrangement of two different metals:
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Two convert heat energy into electrical energy
To produce more heat
To convert heat energy into chemical energy
To convert electrical energy into heat energy
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Question # 3
The resistivity of two wires is
ρ
1
and
ρ
2
which are connected in series. If there dimentions are same then the equivalent resistivity of the combination will be:
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(
ρ
1
+
ρ
2
)
1/
ρ
1
+ 1/
ρ
2
ρ
1
+
ρ
2
/2
ρ
1/
ρ
2
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Question # 4
When a wire of length 'l' and resistance R is cut into two equal parts then resistivity of each part.
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is doubled
Remains the same
Is halved
Is one fourth
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Question # 5
Resistance tolerance for gold colour is.
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50%
30%
20%
5%
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Question # 6
Resistivity at a given temperature depends upon.
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Area of cross section
Length
Nature of material of conductor
Both length and area
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Question # 7
Terminal potential difference is greater than emf of the cell when
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Circuit is open
Circuit is closed
small battery is charged by bigger battery
None of these
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Question # 8
The conventional current is due to the flow of
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Atoms and molecules
Positive charge
Negative charge
Bot (b) and (c)
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Question # 9
The current flowing through each resistor of equal resistance in parallel combination is.
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Same
Different
Zero
Infinite
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Question # 10
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 # 11
A charged conductor has charge on its.
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Inner surface
Outer surface
Middle surface
Surrounding space
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Question # 12
The color code of "Green"
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8
3
5
7
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Question # 13
The thermistors convert changes of temperature into.
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Light energy
Electric voltage
Heat
Sound
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Question # 14
Unit (S.I) of temperature coefficient of resistivity of a material is
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K
K
-1
o
C
K
-2
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Question # 15
If a charge Q flows through any cross section of the conductor in time t, the current I is
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I=Qt
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Question # 16
The resistivity of --------------------decrease with the increase in temp
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Gold
Silver
Copper
Silicon
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Question # 17
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 # 18
Colour codes are used to calculate the.
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Nature of resistor
Numerical value of resistance
Potential difference
Current
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