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Online Tests
Ics Part 2 Physics Test Online MCQs With Answers
Question # 1
A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is.
Choose an answer
0.1 J
10 J
100 J
1000 J
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Question # 2
What is the co-efficient of mutual inductance, when the magnetic flux changes by 2 x 10
-2
Wb, and change in current is 0.01 A?
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2 H
3 H
1/2 H
Zero
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Question # 3
A one microfarad capacitor of a TV is subjected to 4000 V potencial difference.The energy stored in capacitor is:
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8 j
16 j
4 x 10
-3
j
2 x 10
-3
j
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Question # 4
Two opposite point charge of same magnitude separated by distance 2d, electric potential mid way between them is.
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1 V
2 V
Zero
V/2
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Question # 5
Which of the following series of hydrogen spectrum lies in ultra violet region.
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Lyman sereis
Paschen series
Balmar series
Bracket series
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Question # 6
Kirchhoff's voltage rule is a way of stating conservation of.
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Mass
Charge
Energy
Momentum
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Question # 7
The 1
st
Bohr atom in the hydrogen atom has radius
Choose an answer
3.56 x 10
-10
m
0.053 x 10
-11
m
0.53 x 10
-11
m
5.30 x 10
-11
m
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Question # 8
Both Xenon and cesium have
Choose an answer
33 isotopes
34 Isotopes
36 Isotopes
35 Isotopes
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Question # 9
A step up transformer is used 120 V line to provide 240 V. If primary coil has 100 turns the number of turns is secondary is.
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50
100
150
200
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Question # 10
A moving charge is surrounded by:
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2 Fields
3 Fields
4 Fields
None of these
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Question # 11
Average value of current and voltage over a complete cycle is.
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Positive
Negative
Zero
Infinite
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Question # 12
Energy density in an inductor is.
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Directly proportional to magnetic field
Directly proportional to square of magnetic field
Inversely proportional to magnetic field
Inversely proportional to square of magnetic field
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Question # 13
In modulation, low frequency signal is known as
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Carrier wave
fluctuated signal
Modulated carrier signal
Modulation signal
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Question # 14
Domains are existed in
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Ferromagnetic materials
Paramagnetic materials
Semi conductors
Diamagnetic materials
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Question # 15
The longest wavelength of Paschen series is.
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656 nm
1094 nm
1875 nm
2000 nm
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Question # 16
If the length of solenoid is doubled but N same, B inside the solenoid becomes.
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Half
Doubled
One fourth
Four times
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Question # 17
An electron moves at 2 x 10
2
m/sec perpendicular to magnetic field of 2T what is the magnitude of magnetic force:
Choose an answer
1 x 10
-6
N
6.4 x 10
-17
N
3.6 x 10
-24
N
4 x 10
6
N
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Question # 18
In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
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Maximum
Minimum
Zero
Negative
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