: Relates electric flux through a closed surface to the enclosed charge.
: Represents the directional energy flux (power density) of an electromagnetic field. Example Solved Problems Force Between Two Charges : Find the force on a charge at the origin due to Solved Problems in Electromagnetics
: Used to find the force between point charges. : Relates electric flux through a closed surface
: The four governing equations of electromagnetism—Gauss's law for electricity and magnetism, Faraday's law, and the Ampère-Maxwell law—are used to solve complex wave propagation and field problems. the field is calculated using
: For a 200-turn electromagnet that is current, the field is calculated using , resulting in Current and Time : If
: Describes how a changing magnetic field induces an electromotive force (EMF).