Physics GCSE
I² R heating
What I² R heating means in Physics GCSE, as defined for AQA.
Definition of I² R heating
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Reference: AQA
The power wasted heating the cables is P = I² R, which falls with the square of the current.
Topics that use I² R heating
- The National Grid (AQA GCSE)
Related terms
- high potential difference
- P = V I
- step-down transformer
- step-up transformer
- transmission efficiency
- I² R losses
- transformer efficiency
Using I² R heating in the exam
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