Resistors, Lamps and Diodes

The Resistor

These small components allow us to control the current and potential difference in different parts of a circuit. Their key feature is that their resistance remains constant.

Resistor: Example

This example shows how you can read data off a graph to calculate an answer.

The Filament Lamp

These light bulbs work with a very thin wire. As it heats up it starts to glow and give out light.

Filament Lamp: Example A

This example looks at how you can take data from a graph to calculate the resistance at a certain value of potential difference.

Filament Lamp: Example B

Here you need use your knowledge of physics to explain why the resistance changes.

The Diode

These small components work like a one way valve, so the current only flows one way.

You may also be interested in...

Click below to return to your exam board

or

Coronavirus COVID-19 updates and daily lessons

GCSE Physics Online Recommended for Home Learning

The following organisations have recently recommended these resources to support students who are learning from home during the Covid-19 crisis.

Follow me!

  • YouTube
  • Instagram
  • Twitter