Home Forums Exams and revision Definition of magnetic flux VCE 2023 MC Q.6 Reply To: Definition of magnetic flux VCE 2023 MC Q.6

Barbara McKinnon
Post count: 2

Dear Man,
Thanks for your comment. This is a question that comes up quite often in discussion.
I don’t think the upper case PHI notation is helpful or physically correct. There are not N lots of flux. The flux is a measure of the intensity of the field passing through a surface area. The material bounding the surface area is independent of the concept of flux. Maxwell’s equations tell us that a changing magnetic field produces an electric field. This means that if the area through which a magnetic field passes is bounded by a conducting loop and the flux through the loop changes, then an electric field and corresponding EMF is experienced at all points on the loop and, if the loop is continuous a current will flow. More loops, means more points on conductor experiencing an electric field, and hence more current.

Sorry to take so long to notice your post!