This set of Engineering Materials Science "Multiple Choice Questions & Answers" are based on "ELECTRICAL PROPERTY"
ELECTRICAL PROPERTY
Multiple Choice Questions (MCQ)
Hello reader, here you can find some MCQ with answers. But before reading this I will suggest you take a practice test on these questions given below. so you can understand your strength on this topic.
Click here to go Practice Test section on this topic namely Electrical Property.
But if you want to read this topic first and then practice it then read it carefully. The Multiple Choice Questions (MCQ) based on Electrical Property are given below:
PART - IV
1) If e, μ, and n respectively represent the charge, mobility, and concentration of electrons respectively, then the electrical conductivity of a metal is
Correct Answer is "B"
If e, μ, and n respectively represent the charge, mobility, and concentration of electrons respectively, then the electrical conductivity of a metal is neμ
2) If ρo and ρ(T) are the temperature-independent and temperature-dependent parts of the resistivity of metal, then the total resistivity is
Correct Answer is "B"
If ρo and ρ(T) are the temperature-independent and temperature-dependent parts of the resistivity of metal, then the total resistivity is ρ= ρ0+ρ(T).
3) The Fermi level EF depends on the length L of a linear solid as
Correct Answer is "D"
The Fermi level EF is independent of the length L of a linear solid.
4) Which of the following statement is true?
Correct Answer is "A"
The electrical conductivity is directly proportional to both the number of free electrons and the electron mobility.
5) The total resistivity of a metal is
Correct Answer is "B"
The total resistivity of a metal is the sum of thermal, impurity, and deformation resistivity contribution and is represented by Matthiessen's rule as ρtotal = ρt + ρi + ρd
6) The conductivity of Aluminium is _______ the conductivity of copper.
Correct Answer is "A"
The conductivity of Aluminum is less than the conductivity of copper.
7) In an intrinsic semiconductor number of electrons is _______ the number of holes.
Correct Answer is "A"
In an intrinsic semiconductor number of electrons is equal to the number of holes.
8) Hole mobility is __________ the electron mobility.
Correct Answer is "B"
Hole mobility is less than electron mobility.
9) p-type semiconductor is prepared by doping ______ atom into the Si.
Correct Answer is "B"
A p-type semiconductor is prepared by doping trivalent (B, Al, and Ga) atom into the Si.
10) For n-type semiconductor majority charge carrier is
Correct Answer is "A"
For n-type semiconductor, the majority charge carrier is a free electron
Do you read all the questions and answers given above carefully? let's make a practice on all the questions given above.
Go to: Practice Test on Electrical Property (MCQ)
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