Grade 8 Natural Sciences
Term 3:
Energy and
change
Energy transfer in electrical systems
2.2.4 Resistors
A resistor is a circuit component that offers
resistance against the flow of charge.
Examples
Resistors in circuits:
• Light bulbs
• Elements in kettles, heaters, geysers
and stoves
Definition
Energy transfer in electrical systems
 Do
exercise 16 page 224-225