Question

A wire of material is 5cm long and has a cross section of 0.5 cm2. If the resistance along the length is 15 ohms, what will be its resistivity​

Answer 1

Answer:

rho(resistivity) = RA/l

put the values =

15×0.5/5 = 0.15 ohm -m

the values are in cm change it to metre that it's ...u get Ur answer

Answer 2

using formula R= p(l/A)