4ELEC-16
Contents
Outcomes
- Pupils can recall one volt is one joule per coulomb
Specification References
- 2.19 recall that:
voltage is the energy transferred per unit charge passed
the volt is a joule per coulomb.
Starter
Ask pupils to write down on mini white boards all the electricity equations they have come across so far.
and/or ask pupils to wrtie down all of the electrical quantities they have come across so far including their symbol, unit and unit symbol.
Main Body of Lesson
Go through deriving V=E/Q leading to the idea that one volt is a joule per coulomb. You could also revise here that the amp is a coulomb per second and the watt is a joule per second. You can use all three of these definitions to show that P=IV is homogeneous s the coulombs disappear.
If you have a reasonable group you can talk about the electronvolt as a unit for energy.
Can use the rest of the lesson to do some calculation work
