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Learning about how electric circuits work is fun! You are going to use so many electrical devices in your lives that it's really important to have some sort of idea about how they work. Working with circuits gives you important knowledge that will help you to use things correctly, to work out why things might not work and how to put that right.
So, to check whether a simple electric circuit works, you need to check on whether:
- it's complete - there must be no 'gaps' in the circuit
- there must be a power source, like a battery. 
- both sides of the battery (+ and -) need to be connected into the circuit
- if there are two batteries, they need to be connected + to - or the electric current won't flow.
Now, you'll have covered all this in your lessons, so this is just a reminder.
In this worksheet there are lots of different circuits drawn for you. All you have to do is to look at them carefully and decide whether it's going to work or not. It's as simple as that; apply the points above and what you know about circuits from your previous work.
Have Fun!
