ELECTRICITY

We can get electricity from a battery or the mains.

Electricity will flow around a circuit like water through a pipe. This is the current.

Instead of water there are charged particles called electrons flowing around the wires.

Current is the flow of charge.

• Electricity travels from the power source, such as a battery, round a series of conductors (the circuit) back to the power source.

• If there is a gap in the circuit - no electricity will flow.

• We draw a circuit diagram which uses symbols instead of pictures.

Set up this circuit using the boards.

• Set up a circuit using 2 batteries and 1 bulb.

• Draw the circuit diagram.

• What happened to the bulb?

• What happens if you turn 1 of the batteries around?

Copy and complete the following statements by selecting the correct word from the box.

can can’t negative positive energy complete open closed

a) For a current to flow there must be a ………….circuit.

b) For a current to flow switches must be …………

c) If there is no gap in a circuit the current ………. Flow.

d) For a circuit to work 2 cells must be connected positive to ……

e) A battery or power pack is a source of electrical ………..