Electromagnetism Question Preview (ID: 39836)


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What is a magnet?
a) Any material that has mas a South and a South
b) The sky
c) Any material that attracts iron, nickel, and cobalt
d) A place in Atlanta

Electromagnets are magnets formed when current passes through
a) a coil of wire
b) aurora borealis
c) mixture of metals
d) electric current flow

Electromagnet rotates between the poles of a _______________ magnet
a) permanent
b) Positive
c) Negative
d) repulsion

broken or cut magnet
a) still has two magnetic poles
b) has two south poles
c) has two north poles
d)

Permanent magnets keep their magnetism after they are kept on the magnetic field
a) True
b) False
c)
d)

Temporary Magnets are made of materials that soft material like
a) paperclips and nails
b) wood
c) copper
d) aluminum

The North Pole form charged particles which are known as
a) Aurora Borealis
b) Southern Lights
c) Aurora Australis
d) North America

Michael Faraday is a
a) British Scientist known for his discoveries in electromangetism
b) An American Physicist
c) An Australian Car Racer
d) An European Timer Traveller

What happens in a hydroelectric dam?
a) The PE turns into KE
b) The KE turns into PE
c) The Potential Energy of lake water is converted to Kinetic Energy, then Mechanical Energy turns the generator
d) The ME turns into PE

Law of Electric Charges
a) Like repels like and opposites attract
b) 1
c) 1
d) 1

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