TTG003
Definiton : Resistance is the opposition that a substance offers to the flow of electric current. Whereas , Resistivity of a material is its specific resistance. Nature : Moreover,Resistance is variable.But,Resistivity is constant. SI unit : SI unit of resistance is ohm.But SI unit of resistivity is ohm metre. Formula : R=V/I Rho=R ×A/l
Answers & Comments
Property of substance due to which it opposes the flow of electrons.
➡️RESISTIVITY:
Resistivity is the property of the conductor due to which it offers resistance to the flow of current through it .
➡️UNIT OF RESISTANCE :
Ohm
➡️UNIT OF RESISTIVITY
Ohms meter
➡️DEPENDENCE OF RESISTANCE :
=> Length, cross-section area of conductor and temperature.
➡️DEPENDENCE OF RESISTIVITY:
=> Resistivity of the material depends only on its material and temperature.
Resistance is the opposition that a substance offers to the flow of electric current.
Whereas ,
Resistivity of a material is its specific resistance.
Nature :
Moreover,Resistance is variable.But,Resistivity is constant.
SI unit :
SI unit of resistance is ohm.But SI unit of resistivity is ohm metre.
Formula :
R=V/I
Rho=R ×A/l