ELECTROSTATIC INDUCTION

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ELECTROSTATIC INDUCTION

 Charges are produced by Electrostatic Induction.

Electrostatic induction is the process of charging a body by another charged body .

The body acquire a charge opposite in sign to the charging body

LAW OF CONSERVATION OF CHARGES.

This law states that charges can neither be created nor destroy during Electrostatic induction. They can only be transferred  from one body to another.

Electroscope

An electroscope is an instrument used to detect and test electric charges.

An example of electroscope is  Gold leave Electroscope

Gold Leave Electroscope

The two Gold leaves in this Electroscope are used to detect and test the electric charges’

The two gold leaves are at distance apart and both are attached to the same brass rod which is attached to a brass plate that accept charges.

When the brass plate accepts the electric charges, an increase in the divergence of the two gold leaves of the electroscope means the charge of the body is the same with the electroscope. While decrease in the divergence of the two gold leaves of the electroscope means opposite charges is brought to the electroscope. The electroscope detects the presence of charges and sign of the charges(+ or -)

STATIC CHARGES IN CONDUCTORS, SEMI-CONDUCTORS AND INSULATORS

Conductors allow charges to pass through them easily e.g metals, graphites acids, salt, human body earth are good conductors of charges.

Insulator do not allow charges to pass through  e.g glass plastic dry wood sulphur.

Semi-conductor are in –between conductor and insulators. Example are are silicon, and germanium.

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