a magnet
The electric current CAUSED a magnetic field. This discovery led to the invention of electromagnet.
a magnet
Hans Christian Oersted's hypothesis was that an electric current produces a magnetic field around it. This hypothesis led to the discovery of electromagnetism and laid the foundation for the development of the field of electromagnetism.
Hans Christian Oersted's hypothesis suggested that an electric current flowing through a wire creates a magnetic field around the wire. This demonstrated the relationship between electricity and magnetism, leading to the development of electromagnetism.
a magnet
magnet
Magnet. Oersted's hypothesis was proven correct when he observed that a compass needle placed near a wire carrying an electric current would deflect, indicating the presence of a magnetic field around the wire.
the electric generator
The hypothesis that objects with more mass will exert a greater gravitational force on each other. The hypothesis that light is composed of particles called photons. The hypothesis that electric currents produce magnetic fields.
Hans Christian Oersted
The electric battery
His contribution was the electric currents create magnetic fields, an important aspect of electromagnetism...