Grades 6, 7 and 8 | Science | Middle School

Back to Science: Middle School: Grades 6, 7 and 8

Science: Middle School: Grades 6, 7 and 8 Quiz - Electrical Circuits 2 (Questions)

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.

It costs only $12.50 per month to play this quiz and over 3,500 others that help you with your school work. You can subscribe on the page at Join Us

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.

What does an electric circuit need to provide energy?

[ ]	A bulb
[ ]	A cell
[ ]	A switch
[ ]	A wire

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

A complete circuit has .......

[ ]	a motor in it
[ ]	a switch in it
[ ]	two bulbs in it
[ ]	no breaks in it

What is the unit of electric current?

[ ]	Amp
[ ]	Ohm
[ ]	Volt
[ ]	Watt

What is used to measure the flow of current in a circuit?

[ ]	Ammeter
[ ]	Battery
[ ]	Rheostat
[ ]	Voltmeter

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

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

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

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

10.

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

Science: Middle School: Grades 6, 7 and 8 Quiz - Electrical Circuits 2 (Answers)

What does an electric circuit need to provide energy?

[ ]	A bulb
[x]	A cell
[ ]	A switch
[ ]	A wire

A battery contains two or more cells

Which of the following does a light bulb do?

[ ]	Change electrical energy into kinetic energy
[x]	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

A complete circuit has .......

[ ]	a motor in it
[ ]	a switch in it
[ ]	two bulbs in it
[x]	no breaks in it

What is the unit of electric current?

[x]	Amp
[ ]	Ohm
[ ]	Volt
[ ]	Watt

What is used to measure the flow of current in a circuit?

[x]	Ammeter
[ ]	Battery
[ ]	Rheostat
[ ]	Voltmeter

Three bulbs connected in series .......

[ ]	are brighter than one bulb
[x]	are dimmer than one bulb on its own
[ ]	do not light up
[ ]	are the same brightness as one bulb

In a parallel circuit .......

[ ]	the current can flow through only one route
[x]	the current can flow through more than one route
[ ]	the current does not flow
[ ]	the current gets smaller

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
[x]	series with the bulb

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
[x]	parallel with the bulb
[ ]	series with the bulb

10.

If more bulbs are added in series in a series circuit .......

[x]	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