1. Review Read the comments I have written in your book.
Complete your next steps in PURPLE PEN.
Correct any Spelling and Grammar mistakes in PURPLE PEN.

2. On your whiteboard, explain how an electric circuit works
Engage
On your whiteboard, explain how an electric circuit works
What moves around the circuit?
What does it carry?
What is the job of the battery?
What does the bulb do?
What are current, voltage and resistance?

5. Current, Voltage & Resistance Part II
Draw a line under last lesson’s work and write today’s title in your book...
18/11/2018
c/w
Current, Voltage & Resistance Part II
P2.6

6. Why does a voltmeter need to be connected in parallel?
Explain
What is voltage?
Why does a voltmeter need to be connected in parallel?
What is a Volt?

7. Voltage is the amount of energy that each electron gets.
A voltmeter must be connected in PARALLEL – it measures the amount of energy each electron has before AND after (e.g. the bulb), and works out the DIFFERENCE.
1 volt = 1 bit of energy per electron
1 volt = 1 Joule per Coulomb
Key Notes

8. Extend What effect does increasing the resistance have on: Current
Voltage of the supply
Voltage of the component?
How does a variable resistor work?

9. Voltage = current x resistance
Extend
Current, voltage and resistance are linked by the equation:
Voltage = current x resistance
V = I x R

10. Extend
Example
How much current flows through a device if it has a resistance of 10Ω and is connected to a supply voltage of 230V?

11. Evaluate What are YOUR next steps?
R-A-G your understanding of today’s specification points
START OF LESSON
END OF LESSON
2.6
Investigate the relationship between potential difference (voltage), current and resistance
2.7
Explain how changing the resistance in a circuit changes the current and how this can be achieved using a variable resistor
2.8
Use the equation:
potential difference (volt, V) = current (ampere, A) x resistance (ohm, Ω )
V = I x R
What are YOUR next steps?