a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle
What is a Magnetic field ?
100
a portion of a ferromagnetic material where the magnetic moments are aligned with one another because of interactions between molecules or atoms.
What is Magnetic Domain ?
200
Practical capacitors and inductors as used in electric circuits are not ideal components with only capacitance or inductance
What is Equivalent Resistance ?
200
an electric current that reverses direction at regular intervals, having a magnitude that varies continuously in sinusoidal manner
What is Alternating Current ?
200
a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle
What is a Magnetic Pole?
300
a vector quantity from which is determined the magnitude and direction of the force (electric force) on a charged particle due to the presence of other charged particles, accelerated charged particles, or time-varying currents.
What is an Electric field ?
300
a device for reversing the direction of a current.
What is Commutator ?
400
an electric device consisting essentially of two or more windings wound on the same core
What are Transformers ?
400
an electric current of constant direction, having a magnitude that does not vary or varies only slightly
What is Direct Current ?
500
the induction of an electromotive force by the motion of a conductor across a magnetic field or by a change in magnetic flux in a magnetic field
What is Electromagnetic Induction ?
500
a device consisting of an iron or steel core that is magnetized by electric current in a coil that surrounds it