Knowing that parallel currents attract, the inward pressure on the curved surface of a thin walled, long hollow metallic cylinder of radius $$R = 50\ \text{cm}$$ carrying a current $$i = 2\ \text{A}$$ parallel to its axis distributed uniformly over the entire circumference, is

A

$$2.05\times10^{-1}\ \text{N}/\text{m}^2$$

B

$$2.55\times10^{-3}\ \text{N}/\text{m}^2$$

C

$$2.05\times10^{-5}\ \text{N}/\text{m}^2$$

D

$$2.55\times10^{-7}\ \text{N}/\text{m}^2$$