Potential Difference, Current and Resistance

Curriculum support5 minsFREE

Key takeaways
State Ohm’s law for Ohmic conductors
Describe Ohmic and Non – Ohmic conductor
Use the equation for voltage, current and resistance in exam questions.
Laura LewisHost: Laura studied at Royal Holloway University of London and the Open University. She is passionate about science communication and has presented talks about Exoplanets at Oxford University and Imperial College London.

Solving equations and formulas are an essential topic to grasp in Physics. In this class we will look at Ohm’s law that relates current, resistance and potential difference (voltage). We will rearrange the equation and apply it to Ohmic conductors, whilst discussing how non-Ohmic conductors behave.  These 5 minute, short burst classes give students the chance to practise solving equations to allow them to excel in their future learning.

More Short Science Sessions: Equations for Energy and PowerCalculating DensityMeasuring CurrentThe Gas Giant Planets

Safeguarding reminder:The safety of your child is of the utmost importance. All of our classes are pre-recorded to remove any concerns around live participation. For reruns of our past live classes, students' webcams and microphones were disabled and only the chat history, if participation was requested, is visible.

Suitable for:

This short session is suitable for all students studying Physics/Science at school in Year 9-11 or S3-S5. 

Class requirements:
You will need a laptop or device with internet connection to watch the class, as well as a pen and notepad for taking notes.
What to expect:
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