The concept of a magnetic field forming around a conductor when current flows through it is called which term?

• A. Electromagnetic Induction
• B. Magnetism
• C. Electromagnetism
• D. Ferromagnetism

Answer: (C)

When current flows through a conductor, it creates a magnetic field around it. This is a manifestation of electromagnetism—the part of physics that describes how electricity and magnetism are interlinked and governed by Maxwell’s equations. The magnetic field around a steady current is explained by Ampère’s law, a core idea in electromagnetism.

Why not the other terms: magnetic field around a wire is not about generating current from changing flux (that’s electromagnetic induction). Magnetism alone refers more generally to the property or presence of magnetic effects, not the underlying linkage to moving charges. Ferromagnetism is a specific type of magnetic ordering in certain materials, not the broad phenomenon of a current producing a surrounding magnetic field.