Magnetism 4

  • View
    25

  • Download
    2

Embed Size (px)

DESCRIPTION

Magnetism 4. Electricity and Magnetism Related. Hans Christian Oersted. Discovered that an electric current causes a magnetic field. How? Connected a series circuit and turned on the power. A nearby compass moved!. This Proved there was an electromagnetism link. - PowerPoint PPT Presentation

Transcript

  • Magnetism 4Electricity and Magnetism Related

  • Hans Christian OerstedDiscovered that an electric current causes a magnetic fieldHow? Connected a series circuit and turned on the power. A nearby compass moved!This Proved there was an electromagnetism link

  • Michael FaradayDiscovered that a magnetic field causes an electrical current.How? Moved a wire through the magnetic field of a strong magnet. Found that an electric current was produced in the wire.

  • ElectromagnetTemporary magnet made by wrapping a current carrying wire around an iron core.More coils = ____________More current = ____________More powerMore power

  • GalvanometerMoving coil electric current detector.The amount of deflection of a needle attached to the coil is proportional to the current passing through the coil.

  • GalvanometerThe accuracy of moving coil meters is dependent upon..Having a uniform and constant magnetic field