The magnetic effect of electric current was first observed by __________

Name the scientist who discovered the magnetic effect of electri

Wires carrying current in a magnetic field experience a mechanical force perpendicular to both the current and magnetic field. André-Marie Ampère in the 1820s observed this underlying mechanism that led to the discovery of the Hall effect.[3] However it was not until a solid mathematical basis for electromagnetism was systematized by James Clerk Maxwell's "On Physical Lines of Force" (published in 1861–1862) that details of the interaction between magnets and electric current could be understood.

In your own words, explain why the moving compass needle proved there was a magnetic field around the electric current.

magnetstriction effect

What phenomenon occurs when a changing magnetic field induces an electric current in a nearby circuit?*Electromagnetic inductionMagnetic Dipole momentHall effect