Question

Find the resistance of metal wire whose length is 6m,diameter is 2m and resistivity is 2.5 into 10 power minus 4

Answer 1

Answer:

R=p(l/a)

=2.5 *10^-4(6/3.14*1^2)

=4.75*^10^-4 ohm

Hope It Helps....

Answer 2

As, resistance is the product of resistivity and length of the conductor divided by the are of cross section.

So R = 2.5 ×10^-4 (2)/π(2/2)^2

So the answer will be 5×10^-4/π or approx =0.000159154943