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Basics of Electric Charge

16 May

Static electricity is electrical charge that is at rest or not moving. ‘Electrostatics’ is the study of static electricity.There are two types of static electric charge, i.e positive charges and negative charges. A neutral object has the same number of positive charges (protons) and negatives charges (electrons).

Static electrical charge can be produced on certain substances by rubbing them with another substance such as wool or silk.
a) One substance will gain electrons and become negatively charged.
b) The other substance will lose electrons and become positively charged.

Examples of substances that can be charged by friction (rubbing) are polythene, perspex, cellulose acetate, ebonite and glass.

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