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Electricity And Magnetism
Test Description: Review for Unit 4
Instructions: Answer all questions to get your test result.
1) The region around a magnet in which forces can act is a(n) ______________________________.
A
Magnetic Pole
B
Magnetic Field
C
Ozone
2) Electricity and magnetism are both part of a single __________________________.
A
Magnetic Field
B
Electromagnetic Force
C
Magnetic Pole
3) Magnets can induce a _____________________________ current.
A
Nuclear
B
Electric
C
Magnetic
4) Electric currents can produce a __________________ ______________.
A
Magnetic pole.
B
Magnetic field.
C
positive charge.
5) Both electricity and magnetism involve the movement of ___________________ and therefore one can generate the other as seen in an electromagnet.
A
Neutrons
B
Protons
C
Electrons
6) Static electricity - accumulation of excess ______________________ charges on an object.
A
magnetic
B
static
C
electrical
7) A conductor
A
stops the follow of electrons in a circut
B
easily moves the electrons through a circuit
8) __________ ___ _________ rearrangement of electrons on a neutral object caused by nearby charged objects.
A
Charging by contact
B
Charging by induction
9) When we rub a balloon on our head and it sticks to a wall because it has become charged, this is call _______ ____ ______.
A
Charging by contact
B
Charging by induction
10) What type of circuit is most commonly used in our homes?
A
Closed Switch
B
Parallel
C
Open switch
D
Series
11) In a parallel circuit with multiple bulbs, and I remove 1, what will happen to the rest?
A
They will stay on.
B
They will go out.
C
They will dim.
12) In a series circuit that has multiple bulbs, and I remove 1 bulb, what will happen the remain bulbs?
A
They will go out.
B
They will dim
C
They will stay on
13) When you design a series circuit it will contain ____________.
A
multiple loops with parallel lights
B
only 1 loop
14) To make a stronger electromagnet you would ________________________
A
Remove coils from the iron core
B
Add more coils to the iron core
15) Which of the following statements about magnets and electricity is true?
A
An electric current is needed to make magnets.
B
Electricity requires a magnet to make current.
C
Magnets can induce electricity.
D
Magnets and electricity both require friction to do work.
16) Magnets with the same poles moving towards each other, for example south to south, or north to north, will _________________-
A
repel each other
B
attract each other
17) What is a circuit?
A
An open path that electric current flows
B
A closed path that electric current flows
18) When we turn off a light in a room, are we opening or closing the switch in the circuit?
A
Opening
B
Closing
19) A complex circuit is _________________________.
A
Includes both series and parallel circuits.
B
Multiple series circuits wired together.
C
Multiple parallel circuits wired together.
20) Why are circuit breakers important to our homes and businesses?
A
They are how we turn lights on and off in our homes and office.
B
How we get power
C
They can prevent circuit overload in certain areas of the home or office and prevent fire.
*select an answer for all questions
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