Question

a voltage of 1.5 volt is applied to the copper wire of diameter 20 millimetre and the length 2 metre find its resistance in the copper wire through it ( resistivity of copper is = 1.7*10^-8 ohm)​

Answer 1

Answer:

1.0821*$10^{-4}$Ω

Explanation:

resistance=resistivity*length/area

           R   = ρ$\frac{L}{A}$

                 =1.7*$10^{-8}$Ωm*2m/π(0.01)∧2

                 =1.0821*$10^{-4}$Ω