Physics-02

04 January, 2019

Conductor: The substances which through charge can flow easily is called conductor.
                 ex: Gold, Cu, Alu etc.

Semi-Conductor: The substances which through charge can flow partially is called semi-conductor.
                 ex: As, Si, Ga etc.

Insulator: The substances which through charge can not flow is called Insulator.
                 ex: Glass, Rubber, Dry wood etc.

**#. State and explain culombs law.

Sol: 

Statement: "At a particular medium, the attractive or repulsive force between two points charge is directly proportional to the product of two charges and inversely proportional to the square of the distance between two charges."

Explanation: 

Columbs law

Considering the q1 and q2 be two point charge placed at a distance r and magnitude of force is F.

According to Columbs law...............

Here K is the proportional constant.