Permanent magnets have organized magnetic domains
In suitable materials, many atomic-scale magnetic effects align.
Current creates magnetic fields
A wire carrying electric current produces a field around it.
Coils strengthen useful fields
Electromagnets use loops of current and often magnetic cores.
Electricity and magnetism are linked
Motors, generators and transformers rely on this relationship.
Source trail: U.S. DOE: Electricity 101
This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.