I wrote air has a lower permeability than iron. Think I'll still get the mark? I wrote the density was unchanged but flux went down.
yeah I'm sure! what'd you say for the equipotentials where the field at X was stronger than Y and then how did you draw the complete equipotential for X? I did a curve through the point X?! :/
yeah I'm sure! what'd you say for the equipotentials where the field at X was stronger than Y and then how did you draw the complete equipotential for X? I did a curve through the point X?! :/
I did a ring around the centre going through point X.