If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Understand: potential energy

Problem

Justice is holding an iron nail that is attracted to a magnet. He brings the magnet closer to the nail.
How did Justice change the magnetic potential energy of this system?
Choose 1 answer: