A light bulb changes electrical energy into light energy.

# Electrical Circuits 2

This Science quiz is called 'Electrical Circuits 2' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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Voltage and wattage are two terms related to electrical circuits. Electricity travels at the speed of light, more than 186,000 miles per second! Lightning is one of the most dramatic effects of electricity. There are some 16 million lightning storms in the world every year!

Try this Science quiz to get you up to speed.

1.
What is the unit of electric current?
Amp
Ohm
Volt
Watt
2.
What does an electric circuit need to provide energy?
A bulb
A cell
A switch
A wire
A battery contains two or more cells
3.
If more bulbs are added in series in a series circuit .......
less current flows
more current flows
no current flows
there is no change in current flow
It is the voltage from the battery or power pack that pushes the current round a circuit. As more bulbs are added to a circuit, it is harder for the battery or power pack to push the current round the circuit. This means that less current flows (so the bulbs would be dimmer than before). To make more current flow you would need to use a higher voltage. To make no current flow, you would need to break the circuit by disconnecting a wire. To keep the current the same as before, you would need to increase the voltage to compensate for the extra bulbs
4.
In a parallel circuit .......
the current can flow through only one route
the current can flow through more than one route
the current does not flow
the current gets smaller
5.
In order to measure the voltage across a bulb in a circuit, the voltmeter is connected in .......
Not connected in the circuit
parallel with the battery
parallel with the bulb
series with the bulb
6.
A complete circuit has .......
a motor in it
a switch in it
two bulbs in it
no breaks in it
7.
Which of the following does a light bulb do?
Change electrical energy into kinetic energy
Change electrical energy into light energy
Change light energy into electrical energy
Change light energy into thermal energy
Thomas Edison invented a light bulb that stayed lit
8.
Three bulbs connected in series .......
are brighter than one bulb
are dimmer than one bulb on its own
do not light up
are the same brightness as one bulb
9.
What is used to measure the flow of current in a circuit?
Ammeter
Battery
Rheostat
Voltmeter
10.
In order to measure the current flowing through a bulb in a circuit, the ammeter is connected in .......
Not connected in the circuit
parallel with the battery
parallel with the bulb
series with the bulb
Author:  Sue Davison