GlossariesGCSE GlossariesGCSE Physics GlossaryResistor

Resistor - GCSE Physics Definition

Reviewed by: Caroline Carroll

Published

A resistor is an electrical component used in circuits to control and limit the flow of electric current. It is made of a material that does not conduct electricity well, which causes resistance. This resistance helps protect other components in the circuit from getting too much current, which could damage them. Resistors are measured in units called ohms, and they come in various sizes and values for different uses.

Examiner-written GCSE Physics revision resources that improve your grades 2x

  • Written by expert teachers and examiners
  • Aligned to exam specifications
  • Everything you need to know, and nothing you don’t
GCSE Physics revision resources

Share this article

Caroline Carroll

Reviewer: Caroline Carroll

Expertise: Physics & Chemistry Subject Lead

Caroline graduated from the University of Nottingham with a degree in Chemistry and Molecular Physics. She spent several years working as an Industrial Chemist in the automotive industry before retraining to teach. Caroline has over 12 years of experience teaching GCSE and A-level chemistry and physics. She is passionate about creating high-quality resources to help students achieve their full potential.

The examiner written revision resources that improve your grades 2x.

Join now