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P.S magnet

QuestionAnswer
transformer can be used to change the voltage of an alternating current
magnetic poles the region where the magnetic field of a magnet is strongest
direct current current that doesn't change direction and comes out of a battery
magnetizim refers to the properties and interactions of magnetic poles
force increases when the distance between two magnetic poles decreases
alternating current current that varies regularly in direction. comes from outlet or socket
permanent magnet (in motor) keeps the motor or generator moving and it attracts and repels the electromagnet
battery source of electrical energy, powers the circuit
commutator changes the direction of the current, rotates the coil (electromagnet)
brushes conductor, closes the circuit
electromagnet (coil) the current in the wire induces a magnetic field in the electromagnet which is then attracted and repelled from perm. mag, and it rotates
electric motor has a battery, commutator, brushes, perm. magnet, and electromagnet. it conversion ee-me
permanent magnet domain aligned for long periods of time. doesnt need to be in a magnetic field
temporary magnet domain is aligned only when in magnetic field
2 ways to increase E.M strength more turns in the coil and increase current
generator made with a perm.magnet, electromagnet, and hand crank which is a source of mechanical energy. a gen. converts me-ee
poles repel like poles
poles attract unlike poles
turbine a large wheel that rotates when pushed by water, wind, or stream
electromagnetic induction the process by which a wire through a magnetic field produces an electric current
compass magnetic needles north pole points toward the Earth's south magnetic pole (or earths north geographic pole)
materials attracted to magnets iron, cobalt,nickel
Created by: bittsygirl
 

 



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