PHY137H5 Lecture Notes - Lecture 9: Electromagnetic Induction, Magnetic Monopole, Electromotive Force
Document Summary
Relevance current induced from a changing magnetic field as you can see from the picture, the change in the magnetic field creates electromotive. Force which creates a current in the wire. What is it used for? we can also create a current in a wire by changing it"s area in a constant magnetic field. eddy currents are induced currents. Relevance the number of magnetic field lines passing through a closed surface magnetic flux is equal to the surface area times the component of the magnetic field that is perpendicular to the surface. The si unit for magnetic flux is weber (wb) or vs (volt- second) Why is it important? as per gauss"s law of magnetism, the sum of the magnetic flux of a closed surface is zero it is a quantity of convenience in: The statement of faraday"s law magnetic flux indicates the presence of a magnetic field.
