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WorksheetsElectrical Current
Total questions: 30
Worksheet time: 53mins
Name
Class
Date
1.
Identify the following as characteristics of either a series circuit or a parallel circuit:
"Consists of units wired in separate branches."
"Consists of units wired in separate branches."
a)
Series circuit
b)
Parallel circuit
2.
A series connection is a type of electric circuit in which there are multiple paths.
a)
True
b)
False
3.
Lightning rods attract lightning.
a)
True
b)
False
4.
A resistor is a device that controls current in electric circuits.
a)
True
b)
False
5.
An electric current is a flow of charged particles.
a)
True
b)
False
6.
A ______ opens and closes a circuit.
a)
power source
b)
conductor
c)
switch
d)
output device
7.
Identify the following as characteristics of either a series circuit or a parallel circuit:
When one light bulb burns out, the rest stay lit.
When one light bulb burns out, the rest stay lit.
a)
Series circuit
b)
Parallel circuit
8.
Electric current is the flow of:
a)
electrons
b)
protons
c)
neutrons
d)
none of these
9.
If a person touches a live wire, he or she gets a severe:
a)
circuit
b)
electric shock
c)
overloading
d)
Earth
10.
Lightning occurs because ___.
a)
the negative charges at the bottom of clouds are attracted to the positive charges on the ground.
b)
the positive charges at the bottom of clouds are attracted to the negative charges on the ground.
c)
the positive and negative charges inside clouds are attracted to each other
d)
All of these reasons are correct.
11.
When we turn the switch to the off position the circuit is __________.
a)
closed
b)
open
c)
negative, positive
d)
overload
12.
When you remove a bulb from a three bulb circuit, and the other two bulbs go off, then the bulbs must have been connected in __________.
a)
parallel
b)
series
c)
open
d)
closed
13.
Find the odd-one out:
Copper
Aluminium
Iron
Wood
Copper
Aluminium
Iron
Wood
a)
Copper
b)
Aluminium
c)
Iron
d)
Wood
14.
What is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
15.
When a short-circuit takes place, the fuse wire melts and breaks the __________.
a)
circuit
b)
electric shock
c)
Earth
d)
kilowatt-hour.
16.
This circuit is...?
a)
open
b)
closed
c)
parallel
d)
all of the above
17.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
18.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
19.
Identify the following as characteristics of either a series circuit or a parallel circuit:
When one light bulb burns out, they all go out.
When one light bulb burns out, they all go out.
a)
Series circuit
b)
Parallel circuit
20.
An electric circuit is a closed loop or pathway that allows electric charges to flow.
a)
True
b)
False
21.
A parallel connection is a type of electrical circuit in which there is a single current pathway.
a)
True
b)
False
22.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
23.
When one bulb in a series circuit containing several light bulbs burn out -
a)
the other bulbs burn brighter.
b)
nothing changes in the rest of the circuit.
c)
none of the other bulbs will light up.
24.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
25.
This circuit is .....?
a)
open
b)
parallel
c)
closed
d)
chris barton
26.
Why do lightning rods need to be grounded?
a)
They don't. The rod is enough to protect the home
b)
to create a path for the electricity to get to the ground
c)
to direct the electricity to the power grid of the house
d)
to deflect the electricity back into the cloud
27.
I am the negatively charged particle in an atom. I can move freely. I can be released, shared, or “stolen” from an atom. Who am I?
a)
proton
b)
neutron
c)
electron
28.
The smallest unit of an element is
a)
An electron
b)
A proton
c)
A neutron
d)
An atom
29.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
30.
Assume a rubber rod is rubbed against cat's hair and gains 5 electrons. Which of the following is true?
a)
The cat's hair lost 5 electrons.
b)
The cat's hair gained 5 electrons.
c)
The cat's hair gained 5 protons.
d)
The cat's hair lost 2 electrons.
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