Resistance ⇒ Actually, Resistance is the special property of Conductor which makes disturbance in the flow of the current. It is denoted by R. Its SI unit is Ohm. Resistance of a conductor is Inversely proportional to the current flowing i.e. If resistance is maximum then the flow of current will be minimum and Vice-Versa.
Resistivity ⇒ If the length of a conductor is 1 unit and area of cross - section is 1 sq. unit then the resistance of conductor is called its Resistivity. It is denoted by ρ(rho). Its SI unit is Ohm-m.
⇒ R = ρ l/A
⇒ R x A/l = ρ
If the cross section area is 1 m² and length of conductor is 1 m then,
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Resistance ⇒ Actually, Resistance is the special property of Conductor which makes disturbance in the flow of the current. It is denoted by R. Its SI unit is Ohm. Resistance of a conductor is Inversely proportional to the current flowing i.e. If resistance is maximum then the flow of current will be minimum and Vice-Versa.
Resistivity ⇒ If the length of a conductor is 1 unit and area of cross - section is 1 sq. unit then the resistance of conductor is called its Resistivity. It is denoted by ρ(rho). Its SI unit is Ohm-m.
⇒ R = ρ l/A
⇒ R x A/l = ρ
If the cross section area is 1 m² and length of conductor is 1 m then,
⇒ R x 1/1 = ρ
⇒ R = ρ