Question

risistance of a wire formulae explainatin ​

Answer 1

THE RESISTIVITY   OF THE WIRE IS GIVEN BY:

                  R=rho*l/A

WHERE A= cross sectional area of wire  l= length of the wire and rho is proportionality constant

and  also it depends upon the temperature and nature of the material used and independent to the  dimension

the resistance of the wire= V/I

WHERE

V= POTENTIAL DIFFERENCE AND I= CURRENT

RESISTANCE OF THE WIRE DEPENDS UPON NATURE OF MATERIAL , LENGTH OF WIRE, TEMPERATURE