Question

A wire runs left to right and carries a current in the direction shown.

A horizontal line representing a wire. There is a vector right labeled I. There is a point labeled Z below the line.
What is the direction of the magnetic field at point Z?

left
right
into the screen
out of the screen

Answer 1

Into the screen.

Reason: using the right-hand rule (thumb points along current to the right), the fingers curl so that below the wire the magnetic field points into the page (into the screen).