Physics Form 5: Chapter 2 - Electric Charge

• There are two types of electric charge namely positive charge and negative charge.
• Like charge repel each other.
• Unlike charge attract each other
• Unit of charge is Coulomb, C.

•  Electric field is a region where a charge experiences electrical force.
• Lines of force are used to represent the direction of an electric field.

 

 

 

Candle in the electric field

• Heat energy from the candle flame produces ionization of air molecules to form positive and negative ions.
• Movement of positive ions which are heavier towards the negative plate causes a bigger spread of the flame.
• Negative ions which are lighter move towards the positive plate and causing a smaller spread of the flame.