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Online Tests
Physics Fsc Part 2 Chapter 3 Online Test MCQs With Answers
Question # 1
The magnetic field inside solenoid is given:
Choose an answer
μ
∘
nI
2
μ
∘
nI
μ
∘
n/1
2
μ
∘
I/n
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Question # 2
Cathode ray oscilloscope works by deflecting a beams
Choose an answer
Neutrons
Protons
Electrons
Positron
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Question # 3
The value of e/m is smallest for
Choose an answer
Proton
Electron
Beta particle
Positron
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Question # 4
Grid in cathode ray oscilloscope controls.
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Number of electron
Temperature of filament
Frequency of electron
Energy of electrons
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Question # 5
The sensitivity of galvanometer directly depends upon
Choose an answer
Magnetic field
Area of coil
Both a and b
None of a, b, c
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Question # 6
Galvanometer is sensitive when C/BAN is
Choose an answer
zero
Large
small
Negative
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Question # 7
For accurate measurement of current through a circuit, the resistance of ammeter should be
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Very small
Very high
Neither small nor high
None of the above
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Question # 8
The SI Unit of magnetic induction is.
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Weber
Tesla
Gauss
Newton
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Question # 9
Magnetic induction can be measured in units of.
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Tesla
Gauss
Weber/m2
All of the above
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Question # 10
If current flowing through a solenoid becomes four times, then magnetic field inside becomes.
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two times
three times
four times
Half
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Question # 11
A sensitive galvanometer is
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Unstable
Stable
Moderate
Both B and C
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Question # 12
μ
∘
(Ampere's constant) has value.
Choose an answer
4πx10
-7
WbA
-1
m
-1
4πx10
-17
Wbm
2
4πx10
7
WbA
-1
m
-1
4πx10-27 Wb/m
2
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Question # 13
To convert a galvanometer into a volt meter a high resistance is connected.
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In series
In parallel
In perpendicular
Along tangent
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Question # 14
The sensitivity of Galvanometer can be increased by:
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Increasing C/BAN factor
Decreasing C/BAN factor
Increasing angle θ
All of above
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Question # 15
A galvanometer is an electrical instrument used to
Choose an answer
Measure resistance
Measure voltage
Detect passage of current
None of these
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Question # 16
A Current flowing towards the reader is denoted by.
Choose an answer
Cross
a bracket
A dot
Positive sign
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Question # 17
Current passing through the coil of galvanometer
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CO/BAN
CoN /BA
NAB/CO
AN/BCO
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