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Charging Materials (GCSE Physics)

Charging Materials

Certain insulating materials can become charged. You can charge certain insulating materials by rubbing them together. For example, if you rub together an uncharged plastic rod with an uncharged cloth, both will get charged.
Electrons can move from rod to cloth. Electrons are negatively charged particles, which move from the rod to the cloth during rubbing. Protons, which are positively charged particles, never move. The rod becomes positively charged as it loses electrons. The cloth becomes negatively charged as it gains electrons.

The positive charge equals the negative charge. The positive charge of the rod should be equal to the negative charge of the cloth. We need to consider the number of electrons moving from the rod to the cloth. The number of electrons gained by the cloth will be equal to the number of electrons lost from the rod.

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Charging Materials (GCSE Physics)

Charging Materials