1. Electric Circuits – Truth Tables

2. Truth Tables WALT: Draw a truth table for an electric circuit
Starter – can you draw a circuit diagram with 2 cells, a switch and a motor and a bulb that are both in parallel?

3. Last lesson we learnt……
Current in a parallel circuit ………………….
Parallel circuits are useful because …………..
A way in which we can make the current in a series circuit change is……………….
Today we will continue to set up parallel circuits and draw a truth table.

4. Please turn to page
Read together the text under “Series or parallel”
Now turn to page – Truth Tables
You are going to carry out a couple of activities and write a truth table for a circuit.

5. Activity 1: Set up these circuits:
Copy these diagrams and write down what you’ve observed and an explanation.

6. Activity 2: Set up the circuit given to you which includes 2 switches in parallel and a buzzer
Draw a truth table for the circuit
Write an explanation of what the truth table tells you
When you are finished, draw a symbol for an AND and OR gate. Write a little explanation under each one to tell us when it would be used.