1. Use the idea of static electricity to explain…
Why when I walk across my carpet bedroom and touch the handle I get an electric shock (EVERY TIME!)
Why I cannot use cling film without it sticking to itself!

2. Electric Shocks Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Electric Shocks

3. Define the terms current and potential difference.
Learning Objectives
By the end of this lesson you should be able to…
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able use the internationally standard symbols to draw circuit diagrams.

4. How many do you recognise? How many could you guess?
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
How many do you recognise?
How many could you guess? V A M

5. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Circuit Diagrams
Leads get tangled, components move around and everything gets messy!
A circuit diagram is a way of making the set up as clear as possible.

6. Circuit Diagrams Rules for drawing circuit diagrams
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Circuit Diagrams
Rules for drawing circuit diagrams
Always use a ruler!
Leads must be in straight lines only
Don’t draw the component, draw the symbol
The component must be attached to the leads, not drawn off the side!

7. Drawing Circuit Diagrams
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Drawing Circuit Diagrams
Power supply in series with 2 bulbs and an ammeter.
Power supply in one loop with a motor, an ammeter and a bulb. Voltmeter measuring the p.d. over the bulb.
A circuit with a power pack and 2 bulbs in parallel. An ammeter measuring the current through each of the bulbs.

8. Drawing Circuit Diagrams
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Drawing Circuit Diagrams 1. 2. A M A A V A

9. Series of Parallel? A A A A 1. 2. M V Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Series of Parallel? 1. 2. A M A A V A

10. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Series or Parallel? A
All components are in one loop – one path for the current to flow.
This is defined as a series circuit. 1. 3.
Components are divided across several different loops. Current has a number of different paths to flow.
This is defined as a parallel circuit. A A

11. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Series or Parallel? 2.
All the components are in one loop (series) BUT the voltmeter is in parallel, this is always the case.
Circuit is still series as no current flows down the path with the voltmeter on. M A V

12. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Describe, in as much detail as you can, how the circuit below is set up?

13. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Current and Voltage
Current – A measure of the rate (speed) at which electric charge (electricity) is flowing in a circuit.
It is measured in Amps (A).
Potential Difference or Voltage – A measure of the ‘push’ the battery supplies. How much energy is transferred onto / by the charge carriers.
It is measured in Volts (V)

14. Current Current = Charge / time I = Q/t
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Current
Current is the rate at which charge flows through a circuit.
Current = Charge / time
I = Q/t

15. P.d (Voltage) P.D (Voltage) = Work done / Charge V = W/Q
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
P.d (Voltage)
The potential difference (voltage) is the amount of work done (energy transferred) per unit of charge, between two points in a circuit.
P.D (Voltage) = Work done / Charge
V = W/Q
P.D (Voltage) = Current X Resistance
V = I X R

16. Current and p.d Very common past paper questions! Finished?
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Current and p.d
Very common past paper questions!
Finished?
Try the further formula practice sheet

17. Current or Voltage? a) The speed an electron travels along the wire
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Current or Voltage?
a) The speed an electron travels along the wire
b) The energy that each particle has in the circuit
c) The rate of flow of charge in the circuit
d) The energy that is transferred from the charge in each component
e) Measured in Volts (V)
f) Measured in Amps (A)

18. Build the Circuit A1 Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build the Circuit A1

19. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test A1 A3 A2
Set up this circuit and then change the position of the ammeter only – do not move any other components!
Record your results onto your circuit diagram – don’t forget UNITS!

20. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test A1 A3 A2
In a series circuit there is the same current at all points in the circuit

21. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test V1 V2
Set up this circuit and then change the position of the voltmeter only – do not move any other components!
Record your results onto your circuit diagram – don’t forget UNITS!

22. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test V1 V2
In a series circuit the potential difference is divided across the components.

23. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test A1 A2
Set up this circuit and then change the position of the ammeter only – do not move any other components!
Record your results onto your circuit diagram – don’t forget UNITS!

24. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test A1 A2
In a parallel circuit the current is divided across the branches.

25. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test V1 V2
Set up this circuit and then change the position of the voltmeter only – do not move any other components!

26. Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Build and Test V1 V2
In a parallel circuit the voltage is the same across the branches.

27. In Summary... Current flows from _______ to ________ around a circuit.
Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
In Summary...
Current flows from _______ to ________ around a circuit.
In series circuit, current is the ______ across the components whereas in a parallel circuit it is _______ between the branches.
Voltage, or potential difference, is _____ across the components in a series circuit, but is the _______ across branches in a parallel circuit.

28. Try the Questions… Learning Objectives
By the end of this lesson you should...
Define the terms current and potential difference.
Be able to calculate potential difference and current when provided with charge.
To able to set up a working electrical circuit from a diagram using standard symbols.
Try the Questions…

29. Come up with your own analogy for current, resistance and voltage.
H.Wk – Thinking Only!
Come up with your own analogy for current, resistance and voltage.