Electric Circuits

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Electric Circuits Truth Tables
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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?

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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.

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Please turn to page 296-297

• Read together the text under Series or parallel
• Now turn to page 306-307 Truth Tables
• You are going to carry out a couple of activities
  and write a truth table for a circuit.

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Activity 1 Set up these circuits
Copy these diagrams and write down what youve
observed and an explanation.
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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.