Welcome to ECE Board Exam Practice Quiz for Electricity and Magnetism Fundamentals. This set of practice quiz 3 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.
The magnetic flux through a wire loop in a magnetic field does not depend on
The area of the loop
The magnitude of the field
The shape of the loop
The angle between the plane of the loop and the direction
Correct!
Wrong!
One that has magnetic poles produced by internal atomic structure with no external current necessary
Diamagnetic
Permanent magnets
Paramagnetic
Electromagnetic
Correct!
Wrong!
The magnetic field of a magnetized iron bar when strongly heated
Becomes weaker
Becomes stronger
Reverses in direction
is unchanged
Correct!
Wrong!
The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
Zero
Dependent on the area of the loop
Dependent on the shape of the loop
Dependent on the magnitude of the field
Correct!
Wrong!
What revolves about the positive nucleus in a definite orbit?
Atom
Proton
Electron
Neutron
Correct!
Wrong!
The ratio of the permeability of material to the permeability of air or vacuum.
Relative permeability
Relative permittivity
Relative conductivity
Relative reluctivity
Correct!
Wrong!
The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force is known as
Retentivity
Reluctivity
Resistivity
Conductivity
Correct!
Wrong!
All matters (gas, liquid and solid) are composed of
Neutrons
Particles
Electrons
Atoms
Correct!
Wrong!
When the ferromagnetic substance is inserted in a current- carrying solenoid, the magnetic field is
Greatly decreased
Greatly increased
Slightly decreased
Slightly increased
Correct!
Wrong!
The diameter of a hydrogen atom is approximately _____ cm.
1.1 x 10^-6
1.1 x 10^-7
1.1 x 10^-8
1.1 x 10^-9
Correct!
Wrong!
Paramagnetic substance has a relative permeability of
Slightly less than one
Equal to one
Slightly equal to one
Very much greater than one
Correct!
Wrong!
The amount of magnetizing force to counter balance the residual magnetism of a magnetic material is referred to as
Reluctivity
Susceptivity
Coercivity
Retentivity
Correct!
Wrong!
The force acting on a unit n- pole placed at that point is called
Magnetic field intensity
Electric field intensity
Electromagnetic field intensity
Intensity magnetization
Correct!
Wrong!
The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization when subjected to a dc magnetic field.
Wartheim effect
Wiedemann effect
Wiegand effect
Edison effect
Correct!
Wrong!
Small voltages generated by a conductor with current in an external magnetic field.
Skin effect
Magnetic effect
Hall effect
Flywheel Effect
Correct!
Wrong!
Germanium atom has _____ protons and _____ electrons.
32, 32
32, 42
42, 32
34, 34
Correct!
Wrong!
_______ is an electromagnet with its core in the form of a close magnetic ring.
Solenoid
Paraboloid
Toroid
Cycloid
Correct!
Wrong!
Refers to the non- metallic materials that have the ferromagnetic properties of iron.
Ferrites
Ferromagnetic
Diamagnetic
Paramagnetic
Correct!
Wrong!
The contribution to the ionization in an ionization chamber by electrons liberated from the walls.
Skin effect
Walt effect
Hall effect
Edison effect
Correct!
Wrong!
A current if flowing east along a power line. If the earth’s field is neglected, the direction of the magnetic field below it is
North
South
East
West
Correct!
Wrong!
Defined as the number of lines per unit area through any substance in a plane at right angles to the lines of force
Flux
Flux lines
Flux density
Flux intensity
Correct!
Wrong!
The force between two magnetic poles varies with the distance between them. The variation is _______ to the square of that distance.
Equal
Greater than
Directly proportional
Inversely proportional
Correct!
Wrong!
Magnetic fields do not interact with
Moving permanent magnets
Stationary permanent magnets
Moving electric charges
Stationary electric charges
Correct!
Wrong!
The lagging effect between flux density of the material and the magnetizing force applied
Permeance
Eddy current
Hysteresis
Reluctance
Correct!
Wrong!
Used to maintain strength of magnetic field
Container
Air gap
Keeper
Source
Correct!
Wrong!
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Electricity and Magnetism – Quiz 03
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