Learning Objective

In this lesson we will learn about electrical resistance and how it can be calculated.

Learning Outcomes

By the end of this lesson you will be able to:

  • Define electrical resistance and give examples of materials with high and low resistance.

  • Describe how different factors can affect the resistance of an electrical wire.

  • Describe fixed and variable resistors.

  • Calculate total resistance in series and parallel circuits.

  • Use Ohm’s law to calculate resistance, voltage and current.