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WorksheetsElectricity and Magnetism Review 2
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
A circuit that has two or more branches for electrons to follow is a(n) ___.
a)
circuit diagram
b)
electron circuit
c)
parallel circuit
d)
series circuit
2.
Which of the following is a device designed to open an overloaded circuit and prevent overheating?
a)
circuit breaker
b)
magnet
c)
resistor
d)
transformer
3.
As a voltage goes up, what happens to the current?
a)
Current stays the same.
b)
Current goes up.
c)
Current goes down.
d)
Current drops to 0 A.
4.
Which of these would lower the electrical resistance of a wire?
a)
making the wire thinner
b)
increasing the wire's length
c)
lowering the temperature of the wire
d)
using denser material for the wire
5.
How much electrical energy does a 75 W light bulb use if it is on for 5 hours?
a)
375 W
b)
.375 kWh
c)
300 W
d)
.300 kWh
6.
The rate at which an electrical device converts energy from one form to another is called ___.
a)
electrical energy
b)
electrical power
c)
electrical resistance
d)
voltage regulation
7.
What is the region around a charged object where an electric force is present?
a)
electric force
b)
proton
c)
electric field
d)
electron
8.
What is the region around a charged object where an electric force is present?
a)
electric force
b)
proton
c)
electric field
d)
electron
9.
According to Ohm's Law, what is the resistance of a light if the voltage is 9.0 volts and the current is 0.30 amps?
a)
0.033 ohms
b)
2.7 ohms
c)
30 ohms
d)
8.7 ohms
10.
If a household's voltage is 120 volts, what is the power rating of a light bulb with 0.5 amps of current flowing through it?
a)
120 watts
b)
600 watts
c)
60 watts
d)
6 watts
11.
A battery is used to power this circuit. What would cause more electrons to flow through the circuit?
a)
replacing the resistor with a larger one
b)
replacing the battery with a larger one
c)
replacing the battery with a smaller one
d)
replacing the resistor with two equal resistors in series
12.
What happens if you rub a glass rod with a piece of silk and the rod becomes positively charged?
a)
Electrons on the rod are destroyed.
b)
The silk becomes negatively charged.
c)
Protons move to the rod.
d)
The glass attracts more protons.
13.
What does down as resistance goes up?
a)
Power goes down.
b)
Charge goes down.
c)
Current goes down.
d)
Temperature goes down.
14.
What happens if you break a magnet in half?
a)
One half will have a north pole only and one half will have a south pole only.
b)
Neither half will have a pole.
c)
Each half will be a new magnet, with both a north and south pole.
d)
Neither half will be able to attract or repel.
15.
The region around a magnet where the magnetic force is exerted is known as its
a)
magnetic pole.
b)
lodestone.
c)
magnetic field.
d)
magnetic domain.
16.
A cluster of billions of atoms that all have magnetic fields lined up in the same way is known as a
a)
magnetic field line
b)
magnetic pole.
c)
magnetic domain.
d)
permanent magnet.
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