Question

define node and electromagnetism ​

Answer 1

magnetism produced by an electric current. Also called: electromagnetics the branch of physics concerned with magnetism produced by electric currents and with the interaction of electric and magnetic fields.

Answer 2

Answer:

These points, sometimes described as points of no displacement, are referred to as nodes. There are other points along the medium that undergo vibrations between a large positive and large negative displacement. ... In a sense, these points are the opposite of nodes, and so they are called antinodes.