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Worksheets8.6 Electricity and Magnetism Review
Total questions: 15
Worksheet time: 5mins
Name
Class
Date
1.
When a bar magnet is broken,
a)
both pieces will have north and south poles
b)
both pieces will have one pole
c)
the two pieces have a stronger magnetic field
d)
the two pieces will repel eachother
2.
This material allows electrons to flow easily through it
a)
conductor
b)
insulator
c)
solid
d)
liquid
3.
Which of the following would increase the magnetic force of a solenoid?
a)
increasing the number of loops
b)
spacing the loops further apart
c)
decreasing the current
d)
adding an insulator as the core
4.
A coil of wire with electricity flowing through it is called a
a)
solenoid
b)
magnet
c)
commutator
d)
armature
5.
Which is true of transformers?
a)
The side with more loops will have a greater voltage
b)
the side with less loops will have greater voltage
c)
an insulated core can connect both loops
d)
the side with less loops will have less resistance
6.
current measures the amount of __________ flowing through a circuit
a)
electrons
b)
volts
c)
ohms
d)
neutrons
7.
The principle that "opposites attract" applies to…
a)
both electricity and magnetism
b)
electricity
c)
magnetism
d)
life
8.
How is a magnet able to pick up bits of metal without touching them?
a)
There is an invisible magnetic field around the magnet
b)
The magnet is surrounded by an electrical field that attracts the metal
c)
The metal exerts a repulsive force on the magnet.
d)
Electrical force form the magnet attracts bits of the metal
9.
How does earth's magnetic field protect life on earth?
a)
it directs charged particles to the poles and then past earth
b)
it absorbs charged particles
c)
it directs particles to the poles, where they are absorbed
d)
it directs particles toward earth's equator
10.
Which statement describes why current flows in a circuit?
a)
Voltage is when current flows from higher to lower potential energy.
b)
Voltage is when current flows from lower to higher potential energy.
c)
Amperes is when current flows from lower to higher potential energy.
d)
Amperes is when current flows from higher to lower potential energy.
11.
Which two statements show how electric and magnetic fields are similar?
a)
Opposite charges and poles are always attracted to each other.
b)
The field lines in both magnetic and electric fields are always straight.
c)
Each charged particle and magnet have both a positive and negative side.
d)
The potential energy increases as like charges or poles get farther apart.
12.
A magnetic field is strongest…
a)
at the poles
b)
in the middle of the magnet
c)
farther away from the magnet
d)
near the middle, about an inch away
13.
What happens when a strong magnet interacts withg other magnetized material?
a)
the strong magnet can re-align the domains of the weaker magnets
b)
the srong magnet's poles will be re-aligned to the smaller one's domains
c)
The strong and weak magnets will amplify eachother
d)
The two will have no effect on eachother
14.
Select each of the following that are true of electricity.
a)
made of stream of elecrons
b)
opposites attract
c)
charges/poles always occur in pairs
d)
can create a field of forces
15.
Select each of the following that are true of magnetism
a)
made of stream of elecrons
b)
opposites attract
c)
charges/poles always occur in pairs
d)
can create a field of forces
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