Question

What will be the resistance of a metal wire of length 2 metre and area of cross section 1.5 into 10 to the power minus 6 metre square if the resistivity of a metal be 2.8 into 10 to the power minus 8 ohm metre

Answer 1

Answer:

5.6×10^-2

Explanation:

l=2

A=1.5×10^-6

p=2.8×10^10-8

.: R= p×l÷A

=5.6×10^-2