Physics · KS3 Y7 · Electricity & Magnetism

Forces between charges

Forces between chargesFree2:03Heddy Score 3 of 7, below the standard
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What you need to know

  • Rubbing a balloon on hair moves electrons from the hair to the balloon, leaving the hair positive and the balloon negative.
  • Opposite charges attract and like charges repel, which is why two rubbed balloons push apart.
  • Protons carry positive charge and electrons carry negative charge; electrons are the ones that move.
  • Conductors let charge move easily, while insulators do not.

In this clip

Runs 2:03, from 0:30 to 2:33 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

1.84M views · 31.2K likes · Professor Dave Explains 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

Explains the balloon-and-hair demonstration and why like charges repel and unlike charges attract, all in terms of electron transfer.

Professor Dave Explains on YouTubechecked 2026-10-22

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