Charge
Electricity and Magnetism

Forceful Comb

Enrichment Activity for 5-11 11-14


What you need

  • A nylon comb
  • A water tap

Instructions

  1. Turn on the tap until you have a very thin stream of water
  2. Now grab your comb
  3. Run the comb through your hair several times
  4. Slowly bring the comb towards the water, 10cm below the tap

Results and Explanation

When the comb is about 3cm away, the water bends towards it! Some objects, like hair and plastic, develop an electrical charge when rubbed together.

The charge in your comb attracts tiny electrical charges in the water molecules, pulling them towards it.

Charge
can be determined for a Positron Muon Tau W Boson Z Boson Proton Quark
can be determined for an Electron Antitau Antimuon Antiquark
is used in analyses relating to Ionisation
IOP DOMAINS Physics CPD programme

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