What is Electrical Resistance?

What is Electrical  Resistance?

Resistance definition

The obstruction of the conductor to the current is called the resistance of the conductor, and the resistance is also a physical quantity that describes the conductivity of the conductor.

Factors that affect resistance

• Length of material
  

• The cross-sectional area of the material

• Properties of materials

• Environment temperature

The basic formula of resistance

• The relationship between resistance, voltage and current (Ohm's Law)

• The relationship between resistance, power and voltage

• The relationship between resistance, power and current

Resistance calculation formula

• Series resistor :

• Parallel resistance :