Physics Basic Unit#7 Test
Assessment
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Physics seconds
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Physics
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12th Grade
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2 plays
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Medium
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40 questions
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1.
Multiple Choice
A wire of resistance 2Ω is bent in the form a circle. The resistance between the ends of any diameter is
1 Ω
0.5Ω
2Ω
8Ω
2.
Multiple Choice
The resistance of semiconductor
increases with increase of temperature
does not change with change of temperature
decreases with increase of temperature
first decreases and then increases with increase of temperature
3.
Multiple Choice
The temperature of a conductor is increased. The product of resistivity and conductivity
Increases
Decreases
Remains constant
May increase or decrease
4.
Multiple Choice
The electric current in conductor is due to the flow of
Positive charges only
both positive and negative charges
negative charges only
neutral particles only
5.
Multiple Choice
A 5 Ω constantan wire is bent to form a ring. Find the resistance across the diameter of the wire.
2.5 Ω
1.25 Ω
5 Ω
0.625 Ω
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