WorksheetsCircuits
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
What supplies the energy in a circuit?
a)
bulb
b)
battery
c)
wires
d)
buzzer
2.
A circuit is a way of routing electricity through a path.
a)
True
b)
False
3.
A circuit is a path that a current can flow along.
a)
True
b)
False
4.
A current can flow without a power source.
a)
True
b)
False
5.
Electrons need a path made from a good
a)
insulator
b)
conductor
6.
Conductors will allow
a)
electrons to move through easily
b)
electrons to slow down/stop
7.
The nail, paperclip, and metal washer are examples of...
a)
conductors
b)
insulators
8.
The plastic spoon, rubber easer, and wooden craft stick are examples of...
a)
conductors
b)
insulators
9.
Insulators: materials that electrons have a hard time going through (glass, rubber, & ceramic)
a)
true
b)
false
10.
If the current has nowhere to go the circuit must be...
a)
open
b)
closed
11.
To control whether a device (light) is on or off, you need a...
a)
strong battery
b)
buzzer
c)
switch
d)
holder for the light
12.
A switch controls the flow of electrons by...
a)
opening and closing a circuit
b)
giving more power to the light
c)
increasing the current
d)
decreasing the current
13.
When the switch is off, the circuit is...
a)
Open (broken)
b)
Closed (flows)
14.
A magnet has
a)
No poles
b)
Only a North pole
c)
Only a South pole
d)
Both a North and South pole
15.
Extending out from a magnet's poles is an invisible area of force called a
a)
magnetic field
b)
North Pole
c)
South Pole
16.
When you put a north pole by a south pole, the two ends will...
a)
attract
b)
repel
17.
Running an electric current through a wire creates a magnetic field
a)
true
b)
false
18.
To make the electromagnet stronger you could...
a)
Tighten the coils around the nail
b)
Strengthen the battery
c)
Both answers are correct
d)
None of the answers are correct
19.
An electromagnet works because an electric current produces a
a)
circuit
b)
pathway
c)
magnetic field
d)
none of the above
20.
In scrap yards, electromagnets are used to pick up...
a)
old cars and other scrap iron and steel
b)
wood
c)
plastic items
d)
none of the above
21.
Unlike a regular magnet, an electromagnet can...
a)
increase strength only
b)
decrease strength only
c)
increase and decrease strength
d)
none of the above
22.
Would the light turn on?
a)
Yes, the pathway is closed.
b)
No, the pathway is open.
23.
Would the light turn on?
a)
Yes, the pathway is closed.
b)
No, the pathway is open.
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