Question

A long, straight wire carrying a current is placed along the y-axis. If the direction of the current is in the +y direction, what is the direction of the magnetic field due to this wire?

Answer 1

The direction of magnetic filed will be clockwise along y axis.

Step-by-step explanation:

According to right hand rule,

Thumb of right hand shows the the direction of current and folded finger shows the direction of magnetic field.

So, a long and straight wire carrying a current and the direction of current is in the + y direction then the direction of magnetic filed will be clockwise across y axis.