Cells are for experiments
A torch cell is small and safe for experiments. Mains electricity, the supply in wall sockets, is not.
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The idea
Step 1 of 2
- A wire joins the two ends of a cell, with nothing else on the loop. The cell can get hot.
- A lamp is added to the same loop. Now the current goes through the lamp.
The rule
Use only cells for experiments. Keep your hands dry. Never use a damaged wire.
| Rule | Why |
|---|---|
| Use only cells or batteries | Mains electricity can be deadly |
| Put a lamp in every loop | A wire across a cell can make it hot |
| Never use a mains lead with a torn cover | The cover is the insulator |
| Keep your hands dry | Our body is a conductor |
| Keep cells away from flames | Heat can make a cell leak or burst |
An adult stays with you every time.