1. Why is the electric potential midway between a dipole equal to zero?

Question

2. How can you identify an equation as being that of a fractal?

3. How does a current carrying wire on top of a magnetized compass needle affect its direction?

THANKS

Answer 1

Potential is a measure referenced to some position, it is arbitrarily set at the midpoint.

Fractal equations are equations that are recursive.

The current forms a magnetic field around the wire, which deflects the magnet.

Answer 2

Thank you so much!!
But as to the third question, how do you determine exactly how the magnet should be deflected (in what direction)?

Answer 3

A wire that is laid in the direction of the compass needle produces a circular magnetic field that is everywhere perpendicular to the axis of the needle. The needle's magnetic field is along its axis.

I believe there will be no effect, because the fields are not alighed