- Oersted developed a principle that describes the magnetic field around a current- carrying conductor.
- Oersted principle states that a charge moving through a straight conductor produces a circular magnetic field around the conductor.
- This instrument shows the action of electric current on a magnet.
- Instrument is used to show the magnetic field created by the current during experiments.
- A cobalt-steel needle (75 mm long) with agate bearing supported by a pivot is mounted on a plastic base and surrounded by a rectangular frame fitted with terminals.
- Setting up a compass through a wire carrying an electric current, Oersted’s apparatus shows that moving electrons can create a magnetic field.
Instrument Name: Oersted’s Apparatus