Question

what will be the resistance of a metal wire of length 2metres and area of cross section 1.55*10 to the power-6 if the resistivity of the metal be 2.8*10 to the power -8 ohm metre​

Answer 1

Answer:

0.036 ohms

Explanation:

$r = rho(l \div a)$

after putting the values we get

r=2.8×2×10^-2÷1.55=0.036 ohms