Attraction & Repulsion

Only electrons can move as the protons and neutrons are fixed together in the Nucleus.

Rubbing materials together only works for insulated objects. Conductors direct the charge flow to earth.

When two electrically charged bodies are brought together they exert a force on each other. Electrically charged objects may attract or repel each other or attract small uncharged objected place near them.

Opposite charges attract.

Like charges repel.

Example

Balloon.

A balloon can stick to a wall with the principle of electrostatic.

When a balloon is rubbed against clothes, the negative electrons from the clothes get transferred to the balloon making the balloon negatively charged. When the balloon is placed next to the wall (a neutral object) It stays stuck to the wall. This is because the negative charge of the balloon repels some of the electrons in the wall. This results in an overall positively charged surface causing the negatively charged balloon to be attracted.

The separate charges in the wall are called Induced Charges

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