WorksheetsBasic Circuits Formative
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
Why does the light go out when you disconnect one of the wires from the metal post?
a)
Because the circuit gets overloaded.
b)
Because there is no longer one continuous loop for current to flow through.
c)
Because the current starts moving extra fast.
2.
Is there any visible change to the lightbulb when you reverse the direction of the battery?
a)
Yes, the light bulb goes out.
b)
Yes, there are sparks flying everywhere.
c)
No, the light bulb still lights up.
3.
What happens to the light bulb when you make a short circuit?
a)
It gets brighter
b)
It stays the same
c)
It gets dimmer but stays on
d)
It goes out
4.
What happens to the posts next to the battery when you make a short circuit?
a)
They get warmer
b)
They get colder
c)
They expand
5.
What is the difference between an open an closed circuit?
a)
In a closed circuit electricity will flow, in an open circuit electricity will not flow
b)
In a closed circuit electricity will not flow, in an open circuit electricity will flow
c)
Electricity flows through both types of circuits.
d)
Electricity does not flow through either type of circuit.
6.
How do you know that current is flowing through a circuit?
a)
The light turns off
b)
The light turns on
c)
The circuit gets cold
7.
Which of the following best describes current?
a)
A potential difference that provides the "force" to push electrons in the circuit.
b)
The flow of electrons through a circuit.
c)
The tendency of objects to try to stop electrons from flowing.
8.
Which of the following best describes voltage?
a)
A potential difference that provides the "force" to push electrons in the circuit.
b)
The flow of electrons through a circuit.
c)
The tendency of objects to try to stop electrons from flowing.
9.
What type of circuit is most likely to cause a fire?
a)
Open circuit because it will make sparks.
b)
Closed circuit because it will cause an explosion.
c)
Short circuit because it will get very hot.
d)
Short circuit because the light bulb will go out.
10.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
11.
How does increasing the voltage in a cirucuit affect the current (assuming resistance stays the same)?
a)
The current would remain unchanged
b)
The current would increase
c)
The current would decrease
12.
How does increasing the resistance affec the current (assuming voltage is kept constant)?
a)
The current would be unaffected
b)
The current would increase
c)
The current would decrease
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