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JE 2019 || Day 4 || Magnetic Circuits Quiz 1
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Question 1
The Electrical conductivity of Intrinsic semiconductor increases with increases in temperature because
Question 2
The electrical conductivity of a semiconductor increases with increase in temperature because
Question 3
The temperature coefficient of resistance of a doped semiconductor is
Question 4
When a very small amount of higher conducting metal is added to a conductor, its conductivity will
Question 5
The electrical resistivity of many metals and alloys drops suddenly to zero when they are cooled to a low temperature (i.e., nearly equal to liquid helium temperature). Such materials (metals and alloys) are known as
Question 6
The resistivity of hard drawn copper at 20 °C is The resistivity of annealed copper compared to hard drawn copper is
Question 7
The magnitude of magnetic field strength H is independent of
Question 8
Photoconductivity is a characteristic of semiconductors. When light falls on certain semiconductors, it
Question 9
When the temperature of a ferromagnetic material exceeds the Curie temperature, it behaves similar to a
Question 10
At a measuring frequency of 1012 Hz, the dielectric constant of a material will be due to
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ESE & GATE EEGeneralAug 6ESE & GATE EE