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Online Tests
Ics Part 2 Physics Test Online MCQs With Answers
Question # 1
A battery move a charge of 40 C around a circuit at constant rate in 20 Sec. The current will be.
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2 A
0.5 A
80 A
800 A
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Question # 2
The magnitude of motional emf is given by
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Question # 3
Target material used in x-rays tube have following properties.
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High atomic number and high melting pouint
High atomic number and low melting pouint
Low atomic number and low melting pouint
High atomic number only
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Question # 4
CRO works by deflecting the beam of electron as they pass through
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Uniform magnetic field
Uniform electric field between two sets of parallel plates
Non-uniform magnetic field
None of these
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Question # 5
Energy stored in inductor is.
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1/2 L I
2
1/2 LI
1/2 L2I
1/2 L2I2
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Question # 6
In case of reverse biasing, current is flown due to:
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Minority charge carriers
Majority charge carriers
Electrons
Protons
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Question # 7
For normal transistor the emitter current can be given by
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I
E
= I
C
I
E
= I
C
+ I
B
I
E
= I
B
None of these
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Question # 8
if time constant in RC series circuit is small, then capacitor is charged or discharged.
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Slowly
Rapidly
At constant rate
Intermittently
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Question # 9
In Pakistan the frequency of A.C. supply is.
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50 Hz
60 Hz
45 Hz
70 Hz
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Question # 10
When the back emf is zero, its draws.
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Zero current
Minimum current
Maximum current
Steady current
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Question # 11
Shunt resistance is
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Low resistance
Zero resistance
High resistance
Impedance
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Question # 12
The main use of A.C is
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Minimum line losses
Long distance transmission
Stepping up to required voltage only
Steeping down to required voltage only
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Question # 13
Wave nature of light appears in
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Pair production
Compton effect
Photo electric
Interference
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Question # 14
The Lenz's law fulfils.
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Law of conservation of energy
Law of conservation of charge
Law of conservation of momentum
Kirchhoff's law
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Question # 15
Efficiency of transformer does not affected by
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Input voltage
Core of transformer
Insulation between sheet
Resistance of coils
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Question # 16
The potential difference between the head and tail of an electrical to
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600 Volt
700 Volt
800 Volt
900 Volt
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Question # 17
The Compton effect is associated with
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X-rays
y-rays
Positive rays
ß-rays
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Question # 18
Insulators have:
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An empty conduction band
Al full valence band
A large energy gap
All of above
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