Electromagnetic induction occurs when:

A) electromagnets are induced in a wire.
B) electrons are induced in a magnet by a moving wire.
C) current is induced in a wire by a moving magnet.
D) a magnetic field is induced into a coil of wire by a magnet.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.