Welcome to ECE Board Exam Practice Quiz for Electricity and Magnetism Fundamentals. This set of practice quiz 10 will test your competence on the theories, concepts and problem solving involving Electricity and Magnetism. The objectives and goals of this quiz is to help engineering students familiarize concepts and theories as well as develop problem solving skills when answering questions related to the Electricity and Magnetism Fundamentals.
Electricity and Magnetism Test Bank
In this section are compiled practice quiz for Electricity and Magnetism that could be able to enhance your knowledge and skills in your preparation for the ECE Board Exam. The goal is to add thousands of questions for you to be familiarized and hopefully help you to be prepared. I am looking forward that this practice quiz will give you an additional confidence in taking your upcoming Engineering Board Exam.
Guidelines:
- Read and understand each question before choosing the best answer.
- The correct answer will be reveal after you have chosen your answer for every questions
- There is no time limit, answer the questions at your own pace.
- Once all questions are answered, you will be shown your rating.
- You have to get 70% of the total items to pass the quiz.
- You can re-take the quiz as many times as you want or until you are satisfied of your rating.
- Comment us your thoughts, scores, ratings, and questions about the quiz in the comments section below!
Choose the letter of the best answer in each questions.
If the value of α25 of a conductor is 1/230 per °C, then the value of α0 is
1/180 per °C
1/150 per °C
1/280 per °C
1/230 per °C
Correct!
Wrong!
If the relative permittivity of a material is 10, then its permittivity is
4π × 10^-7 F/m
4π × 10^-6 F/m
8.854 × 10^-11 F/m
8.854 × 10^-12 F/m
Correct!
Wrong!
If the number of valence electrons of an atom is less than 4, the substance is called
a conductor
a semiconductor
an insulator
a superconductor
Correct!
Wrong!
This paper does not exhibit electricity because it contains the same number of
protons and electrons
neutrons and electrons
neutrons and positrons
atoms
Correct!
Wrong!
Electronic current in a wire is the flow of _______ electrons.
free
valence
bound
loose
Correct!
Wrong!
A positively charged body has
deficit of electrons
excess of neutrons
excess of electrons
deficit of protons
Correct!
Wrong!
If the number of valence electrons of an atom is exactly 4, then the substance is called
a semiconductor
a conductor
an insulator
a cryogenic conductor
Correct!
Wrong!
What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
4
2
8
18
Correct!
Wrong!
There are how many compounds available in nature?
105
1000
300,000
Unlimited
Correct!
Wrong!
The hot resistance of an incandescent lamp is about ________ its cold resistance.
10 times
100 times
5 times
50 times
Correct!
Wrong!
The temperature coefficient of resistance of insulators is
zero
negative
positive
infinite
Correct!
Wrong!
What determines the value of the temperature coefficient of resistance of a material?
length
cross-sectional area
volume
nature and temperature
Correct!
Wrong!
What is the practical unit of electrical energy?
Watt
Kilowatt-hour
Kilowatt-second
Megawat-hour
Correct!
Wrong!
Hipernik is an alloy containing _______ iron and _______ nickel.
40% ; 60%
60% ; 40%
50% ; 50%
70% ; 30%
Correct!
Wrong!
One coulomb of charge consists of ________ electrons.
624 × 10^16
62.4 × 10^16
6.24 × 10^16
0.624 × 10^16
Correct!
Wrong!
The magnetic materials should have a large hysteresis loss for one of the following applications.
Transformers
AC motors
Permanent Magnets
DC generators
Correct!
Wrong!
What is the relative permittivity of air?
0
1
8.854 × 10^-12
4π × 10^-7
Correct!
Wrong!
What is another name for relative permittivity?
Dielectric strength
Electric intensity
Potential gradient
Dielectric constant
Correct!
Wrong!
If the resistance of a material 2 m long and 2 m2 in area of cross-section is 1.6 × 10-8 Ω, then its resistivity is
3.2 × 10^-8 Ω-m
1.6 × 10^-8 Ω-m
0.64 × 10^-8 Ω-m
0.16 × 10^-8 Ω-m
Correct!
Wrong!
The temperature coefficient of resistance of conductors is
positive
zero
negative
infinite
Correct!
Wrong!
If the value of α0 a conductor is 1/234 per °C, then the value of α18 is
1/218 per °C
1/252 per °C
1/272 per °C
1/273 per °C
Correct!
Wrong!
The resistivity of a conductor _________ with an increase in temperature.
increases
decreases
remains the same
becomes zero
Correct!
Wrong!
What is the measure of the density and sign of the electric charge at a point relative to that at some time?
Electric potential
Electric charge
Electric current
Electric intensity
Correct!
Wrong!
The resistance of a material is _________ its area of cross-section.
directly proportional
independent of
inversely proportional to
equal to
Correct!
Wrong!
A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material three times as long and twice the cross-sectional area?
30 ohms
20 ohms
15 ohms
7 ohms
Correct!
Wrong!
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Electricity and Magnetism – Quiz 10
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