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Physics ICS Part 2 Chapter 13 Online MCQ's Test MCQs With Answers
Question # 1
Resistance tolerance of silver band is.
Choose an answer
10%
6%
7%
5%
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Question # 2
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 # 3
The current through a resistance of 100 Ohm when connecting across a source of 220 V is.
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22000 A
22 A
2.2 A
0.45 A
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Question # 4
The resistivity of --------------------decrease with the increase in temp
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Gold
Silver
Copper
Silicon
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Question # 5
An ideal current source shall have resistance
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Zero
Finite but not zero
Infinite
Depend upon requirement
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Question # 6
Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is.
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10 kelvin
70 kelvin
200 kelvin
35 kelvin
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Question # 7
The algebraic sum of potential change in a closed circuit is zero.
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Kirchhoff's 1st rule
Kirchhoff 2
nd
rule
Krichoff's 3
rd
rule
Kirchhoff 4
th
rule
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Question # 8
Calculate current in 2 2R /4Ω resistor.
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1 A
2R /4Ω
R/3Ω
2R /3Ω
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Question # 9
A substance having the negative temperature co efficient of resistivity out of the following is.
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Carbon
Iron
Tungsten
Gold
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Question # 10
Magnetic effect of current is used in.
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Toaster
Electric iron
Electric motor
D.C. Battery
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Question # 11
The heat produced by passage of current.
Choose an answer
H=I
2
Rt
H=IR2T
H=I/Rt
H=I
2
/Rt
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Question # 12
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 # 13
the current which flows from a point at higher. potential to point at lower potential is called.
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Electric current
Conventional current
Either of these
None of above
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Question # 14
Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:
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3Ω
4Ω
4.5Ω
5Ω
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Question # 15
Semiconductor diodes are called:
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Ohmic
non ohmic
Both a & b
none of above
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Question # 16
The thermistors convert changes of temperature into.
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Light energy
Electric voltage
Heat
Sound
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Question # 17
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 # 18
The unit of resistance is:
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Ω
Ωm
Ω
-1
m
-1
Ωm
-1
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