Page 4 of 5
The Lights Are Back On
Excellent, the lights are back on we can get back to the footie. Aggh no, Julie the torch has stopped working now. I have to have a working torch. What if the lights go off again! Julie… please can you sort it out? I’m missing the game.
Ask Julie
Oh for heavens sake give it here. Honestly!
Right, I reckon the batteries need changing on this torch, but there are a number of things that could have happened to stop it working. Look at the circuits here and see if you can predict what will happen.
You’ll need the Flash plug-in to view the above activity. Download the Flash plug in here.
How is voltage measured in a circuit?
The Voltage (measurement of electromotive force) flowing around a circuit is measured using a voltmeter. When a voltmeter is connected into a circuit it will measure the number of volts flowing through that section of a circuit.
Voltmeters are represented in circuit diagrams by a circle with a ‘V’ inside it.
Well that’s all from me. I hope you’ve enjoyed spending some time with me and learning about my work. Please do come back and see me again and remember to look out for me on the Danger of Death sign.
Next page: Quiz
Switch Safety
We use switches in circuits to turn the flow of electricity on and off. When you turn your bedroom light on at night you use a switch. They are very important because they let you control the flow of electricity without touching it.
Never touch a switch with wet hands.
Save Energy
Remember to turn the lights out when you leave a room empty.
Remember to switch TV and computers off when you have finished using them.
