Charging by Induction Explained
- When a charged object is held close to a conductor, electrons in the conductor are able to move towards (or away from) the charged object:
Negative electrons in the aluminium are attracted to the positive rod
- In the diagram above, electrons in the aluminium foil are attracted to the positively charged rod
- This causes the top of the foil to become negatively charged, whilst the bottom edge of it will be left with a positive charge
- The attraction between the positive rod and the negative charges on the top surface of the foil will cause the foil to be attracted to the rod