Answer to Question #165434 in Electricity and Magnetism for Lesedi Plaatje

Question

Good day. I would like to know what is the relationship between the surface area of a conductor and the current through it. Is there a formula to relate these two? Thank you in advance.

Answer 1

Answer

the relationship between the surface area of a conductor and the current through it is given by

Surface current density

$\sigma=\frac{I}{A}$