1. Electrical circuits
By Caroline

2. This is a poster showing symbols and how a circuit diagram is drawn.

3. Simple circuit One battery (cell) Wire
The lines are pointing to what they really look like.
One bulb
Simple circuit
This is a diagram of a simple circuit. All you need are the basics; a bulb, a battery (cell) and a couple of wires.

4. Wire
Two bulbs
Two batteries (cells)
One switch
This is diagram of a series circuit. If the switch is open the bulbs will not light up, but if it is closed they will light up with the help of the two batteries.

5. Wire
Two bulbs
Two batteries (cells)
One switch
This is a diagram of a parallel circuit. The current is ‘split’ into two, and the bulbs are not as bright as in a series circuit, although they will be as bright as each other.