Question

A wire perpendicular to the screen carries a current in the direction shown.

A circle labeled I and a point labeled Z to the right of it.
What is the direction of the magnetic field at point Z?

up
down
left
right

Answer 1

Up.

Reason: use the right‑hand rule. With the current coming out of the page (dot), your thumb points at you and your fingers curl counterclockwise — at the point to the right the field points up. (If the current were into the page, the field at Z would point down.)