Electricity lesson 5
OUTCOME
By the end of the lesson you will be able to identify Ohmic and non Ohmic device by the shape of their voltage vs current curve.
Engage
Ohm's law gives us a relationship between current and voltage. Loads and devices that produce a linear V-I graph are called Ohmic. Non-Ohmic devices do not follow a linear characteristic curve
LEARNING TASKS
Engage
Explore and explain
Prac: Using Ohm's law to find the resistance of an unknown resistor
Elaborate and Evaluate
Try Qs 28, 32-33
Click on the image above and investigate Ohm's Law