VERBAL & NOMINAL #4

Verbal

ØDanish Scientist Hans Christian Orsted discovered in 1820 that electric current create magnetic field.

ØScientist william sturgeon invented the electromagnet in 1824.

ØThe iron was vanished to insulate it from the windings.

ØHis first electromagnet was a-shaped piece of iron that was wrapped with about 18 turns of bare copper wire

ØWhen a current was passed through the coil, the iron became magnetized and attracted other pieces of iron.

Nominal

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