Physics · KS3 Y8 · Energy

The kilowatt-hour

The kilowatt-hourFree2:52Heddy Score 3 of 7, below the standard

What you need to know

  • Energy in kilowatt-hours equals power in kilowatts multiplied by time in hours.
  • Multiply the energy used by the price per kilowatt-hour to calculate the usage cost.
  • A kilowatt measures power, whereas a kilowatt-hour measures energy.

In this clip

Runs 2:52, from 2:50 to 5:42 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

1.03M views · 17.6K likes · The Engineering Mindset 4.49M subscribers

As reported by YouTube on 2026-11-02. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

The worked appliance examples connect energy calculations to electricity bills.

The Engineering Mindset on YouTubechecked 2026-10-18

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