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Worksheets8th Physical Science GMAS Review Electricity and Magnetism
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Emily and Mason are building electric electric circuits in science class. They attach three light bulbs in a series circuit. What will happen if one of the bulbs goes out?
a)
All the bulbs go out.
b)
The two remaining bulbs will be brighter.
c)
The two remaining bulbs will be dimmer.
d)
The bulbs will remain lit at the same brightness.
2.
Amy and Grayson have built a series circuit using a battery, some copper wire, and three light bulbs. What should happen to the brightness of the light bulbs if they add another light bulb to the circuit?
a)
Nothing; the four bulbs will remain as bright as the original three bulbs.
b)
The fourth bulb will be dimmer, and the first bulb will be brightest.
c)
The four bulbs will be brighter than the original three bulbs.
d)
The four bulbs will be dimmer than the original three bulbs.
3.
A switch is inserted into a series circuit of Christmas lights. During the night, the switch is left open. The lights will
a)
continue to burn.
b)
be turned off.
c)
become a parallel circuit.
d)
burn brighter.
4.
Will has built a circuit with a single 1.5 V battery connected in series to three light bulbs. The light bulbs are not as bright as he would like. What can he do to make them burn more brightly?
a)
add a fourth light bulb in series
b)
connect a second battery in parallel
c)
connect a second battery in series
d)
A and C only
5.
Which one of the following parts of a circuit changes electrical energy into another form of energy?
a)
conductor
b)
resistor
c)
base
d)
voltage source
6.
Increasing the current applied to an electromagnet will affect which of the following?
a)
the voltage delivered by the electromagnet
b)
the magnetic field exerted by the electromagnet
c)
the mass of the electromagnet
d)
the nuclear force delivered by the electromagnet
7.
Which of the following will attract one another?
a)
the north pole of a magnet and the south pole of another magnet
b)
the north pole of a magnet and the north pole of another magnet
c)
the south pole of a magnet and the south pole of another magnet
d)
all of the above
8.
Coach Campbell showed the class several lights connected in a circuit. One light bulb burned out. All of the other lights then turned off. What kind of circuit had he been showing the class?
a)
a circuit with too many batteries
b)
a circuit with too many wires
c)
a parallel circuit
d)
a series circuit
9.
Electromagnet Number of wire loops
R 80
S 120
T 100
U 115
Each letter represents an electromagnet with the number of its wire loops listed beside it. Which electromagnet will attract or repel a bar magnet with the greatest force?
R 80
S 120
T 100
U 115
Each letter represents an electromagnet with the number of its wire loops listed beside it. Which electromagnet will attract or repel a bar magnet with the greatest force?
a)
R
b)
S
c)
T
d)
U
10.
Light bulbs on a string of lights are connected using parallel circuits.
Which of these BEST explains why parallel circuits are used instead of series circuits?
Which of these BEST explains why parallel circuits are used instead of series circuits?
a)
If one light goes out on a parallel circuit, all the other lights will go out.
b)
If one light goes out on a parallel circuit, no other lights will go out.
c)
Parallel circuits use less energy.
d)
Parallel circuits are easier to make.
11.
Which of the following best describes the effects of a magnet on a compass and a current-carrying wire on a compass?
a)
The magnet and the wire will both cause the compass needle to move.
b)
Neither the magnet nor the wire will cause the compass needle to move.
c)
The magnet will cause the compass needle to move, but the wire will not.
d)
The wire will cause the compass needle to move, but the magnet will not.
12.
Evan and Joseph are discussing properties of electromagnets and bar magnets. Evan says that electromagnets and bar magnets are very similar and makes the list below to support his conclusion:
1. Both electromagnets and bar magnets have two poles.
2. Like poles of electromagnets and bar magnets repel each other.
3. Both electromagnets and bar magnets use energy.
4. Poles of both bar magnets and electromagnets can be easily charged.
Which pair of statements from the list is INCORRECT?
1. Both electromagnets and bar magnets have two poles.
2. Like poles of electromagnets and bar magnets repel each other.
3. Both electromagnets and bar magnets use energy.
4. Poles of both bar magnets and electromagnets can be easily charged.
Which pair of statements from the list is INCORRECT?
a)
1 and 2
b)
2 and 3
c)
2 and 4
d)
3 and 4
13.
The flow of electricity through a circuit can be compared to the flow of water through a pipe. Using this comparison, the friction caused by the pipe wall would be similar to
a)
the resistance of the circuit.
b)
the amperage of the circuit.
c)
the voltage of the circuit.
d)
the coulombs in the circuit.
14.
Which of the following situations would ALWAYS result in no electrical current flow?
a)
an open switch in a parallel circuit
b)
an open switch in a series circuit
c)
three resistors in a series circuit
d)
adding a resistor to a parallel circuit
15.
Identify the types of fields that interact to produce motion in an electric generator.
a)
an electrical field and a gravitational field
b)
a magnetic field and an electrical field
c)
two electrical fields
d)
two magnetic fields
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