Magnetism Vocab

Front 1

ALTERNATING CURRENT

Back 1

electric current that reverses its direction in a regualr pattern.

Front 2

MAGNETISM

Back 2

a property of some materials in which there is a force of repulstion or attration between certain like and unlike poles.

Front 3

ELECTROMAGNETIC INDUCTION

Back 3

process by which electrical current is induced in a wire when it is moved thrugh a magnetic field

Front 4

ELECTRIC MOTOR

Back 4

a device that contains a rotating electromagnet that changes electrical energy to mechanical energy

Front 5

DIRECT CURRENT

Back 5

electrical current that flows in only one direction through a wire

Front 6

MAGNETIC FIELD

Back 6

the region around a magnet where magnetic forces act

Front 7

GENERATOR

Back 7

device that uses electromagnetic induction to induce electrical current by rotating loops of wire through a magnetic field

Front 8

CRITICAL TEMPERATURE

Back 8

in superconductors, the very low temperature at which a material ceases to have any electical resistance.

Front 9

TRANSFORMER

Back 9

device that can increase or decrease the voltage of an alternating current

Front 10

ELECTROMAGNET

Back 10

strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the coil

Front 11

VOLTMETER

Back 11

a galvanometer that measures potential differences in volts and is placed in parallel across a part of the circuit.

Front 12

AC

Back 12

alternating current

Front 13

AMMETER

Back 13

a galvanometer that measures electrical current passing through in amperes; connected in a series with the circuit

Front 14

MAGNETIC DOMAINS

Back 14

groups of atoms with aligned magnetic poles

Front 15

MAGNETIC POLES

Back 15

the 2 ends of a piece of magnetic material where the magnetic forces are strongest, labeled north pole and south pole

Front 16

SUPERCONDUCTOR

Back 16

supercooled material that has no electrical resistance. a current can flow indefinitely through a super conductor without losing energy