|TOPIC 01:STATIC ELECTRICITY

 

TOPIC 01:STATIC ELECTRICITY

CONCEPTS TO BE COVERED: The concept of static electricity. The origin of charges. Identifying the types of charge. The fundamental law of static electricity. Charging bodies using different methods. Describe the structure of a gold leaf electroscope. Determine the sign of charge. Conductors and Insulators. The concept of capacitors. Charge Distribution along the Surface of a Conductor. The concept of Lighting conductor.

STATIC ELECTRICITY

Static electricity (Electrostatics) is the study of charges at rest.

THE ORIGIN OF CHARGES

When a body is rubbed, it causes the atoms to lose or gain electrons which are revolving around the atomic structure and causing the body to become charged.

TYPES OF ELECTRIC CHARGES

1. Positive charge (+)
2. Negative charge (-)

POSITIVE CHARGE

Positive charge is a charge acquired when an object lose electrons from its atomic structure.

NEGATIVE CHARGE

Negative charge is a charge acquired when an object gain electrons from its atomic structure.

CHARGE ACQUIRED AFTER RUBBING

Materials	Rubbed with	Charge acquired
Ebonite	Fur/cloth	Negative
Glass	Silk	Positive
Polythene	Cloth/fur	Negative
Polystyrene	Cloth/fur	Negative
Perspex	Woollen cloth	Positive
Cellulose	Woollen cloth	Positive

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