Electromagnetic forces and fields

Word List with 30 words
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Words in This List

ammeter
noun
instrument for measuring current in amperes
ampere's law
noun
law of relation of magnetic field to electric current or changing electric field that produces it
conductor
noun
substance, body, or device that readily conducts heat, electricity, sound, etc.
current
noun
time rate of flow of electric charge through a conductor
current loop
noun
current-carrying wire that produces a magnetic field
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electromagnetic field
noun
coupled electric and magnetic fields generated by time-varying currents and accelerated charges
electromagnetic induction
noun
reduction of electric current by changing magnetic field enclosed by an electrical circuit
electromagnetic wave
noun
wave of energy propagated in electromagnetic field
faraday's law
noun
law related to working principles of transformers, inductors and electrical motors and generators
galvanometer
noun
instrument for detecting existence of small electric currents and determining their strength
generator
noun
machine converting one form of energy into another
inductance
noun
property of circuit by which a change in current induces an electromotive force
induction
noun
process of body with electric or magnetic properties producing the same in other without contact
lenz's law
noun
says induced current flows in direction that will oppose change in magnetic field that causes it
lines of force
noun
line used to indicate direction of field at various points in space
loop
noun
closed electric or magnetic circuit
magnetic field
noun
space near magnetic or current-carrying body in which magnetic forces can be detected
magnetic flux
noun
total magnetic induction crossing a surface
mass spectrometer
noun
device for identifying the kinds of particles present in a given substance
motor
noun
comparatively small and powerful engine
mutual inductance
noun
ratio of electromotive force in one of two circuits to rate of change of current in other circuit
north pole
noun
pole of a magnet that seeks the earth's north magnetic pole
permeability constant
noun
fundamental constant in the universe
poles
noun
one of two regions of electric battery, magnet, etc., which exhibits polarity
self-inductance
noun
inductance inducing electromotive force in same circuit as one in which current varies
solenoid
noun
electric conductor through which passing current establishes magnetic field within
south pole
noun
pole of a magnet that seeks the earth's south magnetic pole
toroid
noun
surface generated by revolution of closed plane curve or contour about an axis lying in its plane
torque
noun
something that produces torsion or rotation
voltmeter
noun
calibrated instrument for measuring the potential difference between two points

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