Question

the resistance of a wire of 0.01 CM radius is 10 ohms if the resistivity of the material of the wire is 50 x 10 raise to minus 8 ohmmeter ,find the length of the wire. pls ans with calculations...thanks​

Answer 1

ok let's do it

resistivity=50×10^-8

length= x

area of cross section

= 22/7×1/10^8 m^2

resistance=10 ohms

resistance

=(length/area)×resistivity

thanks for asking the question answer is in the picture

Answer 2

resistivity=50×10^-8

length= x

area of cross section

= 22/7×1/10^8 m^2

resistance=10 ohms

resistance

=(length/area)×resistivity