RESISTANCE

 WHAT IS RESISTANCE IN AN ELECTRIC CONDUCTOR ?

Resistance of a conductor is it’s property to resist the flow of charges through it. Current flowing through a conductor is inversely proportional to its resistance.

Resistance is represented by the letter R or r

SI unit of resistance is ohm. 

Represented by Greek letter Ω

RESISTANCE OF A SYSTEM OF RESISTORS

The current through a conductor depends up on its resistance and potential different (voltage) across its ends. In different Electric circuits resistance can be used in various combinations. There are two methods to combine resistance together.

1. Resistance in series 

2. Resistance in parallel