Magnetism

Question 1

The ability of a material to attract iron, cobalt or nickel

Answer 1

Magnetism

Question 2

What type of magnet is the earth?

Answer 2

Natural

Question 3

What type of magnet is a pierce of hard steel that has been artificially magnetized?

Answer 3

Artificial

Question 4

Use temporary magnets produced by means of an electric current

Answer 4

Electromagnets

Question 5

The lines of force in a magnetic field are called

Answer 5

Flux lines

Question 6

Which way to flux lines travel inside the magnet?

Answer 6

South to north

Question 7

Which way do flux lines travel outside the magnet?

Answer 7

North to south

Question 8

1st law of Magnetism

Answer 8

Every magnet has 2 poles

Question 9

2nd law of Magnetism

Answer 9

Like poles repel, unlike poles attract

Question 10

3rd law of Magnetism

Answer 10

The force of attraction or repulsion between two magnetic poles varies directly as the strength of the poles and inversely as the square of the distance between them

Question 11

The strength of the magnetic feild is measured in

Answer 11

Tesla

Question 12

Not attracted to magnetic fields at all

Answer 12

Nonmagnetic

Question 13

Weakly repelled by magnetic fields

Answer 13

Diamagnetic

Question 14

Weakly attracted to magnetic fields

Answer 14

Paramagnetic

Question 15

Strongly attracted to magnetic fields

Answer 15

Ferromagnetic

Question 16

If 2 bar magnets are suspended in space, what would happen?

Answer 16

They would rotate and attract

Question 17

A lodestone is an example of a

Answer 17

natural magnet

Question 18

What is an example of a ferromagnetic material?

Answer 18

Iron

Question 19

North to north poles would

Answer 19

repel

Question 20

North to south poles would

Answer 20

Attract

Question 21

When iron is fabricated into a magnet, magnetic domains will

Answer 21

align

Question 22

a coil wound into a tightly packed helix

Answer 22

Solenoid

Question 23

more coils means a _______magnetic feild

Answer 23

stronger

Question 24

The intensity of the magnetic field must be ________ to induce a current flow

Answer 24

Alternating

Question 25

4 Factors that induce electromagnetic force

Answer 25

Speed, Strength, Angle, Number of turns

Question 26

Faster speed equals _________ force

Answer 26

more

Question 27

Stronger cuts equals _________ force

Answer 27

more

Question 28

the induction of electricity in a secondary coil by moving a magnetic field

Answer 28

Mutual Induction

Question 29

Mutual Induction has to have which type of current?

Answer 29

Alternating

Question 30

a device that converts some form of mechanical energy into electrical energy

Answer 30

Generator

Question 31

devices used to increase or decrease voltage through induction

Answer 31

Transformer

Question 32

The input side or primary coiled is

Answer 32

supplied with AC

Question 33

The output side of secondary coil

Answer 33

develops AC by mutual conduction

Question 34

A step up transformer increases

Answer 34

voltage

Question 35

A step down transformer increases

Answer 35

Amperage

Question 36

A step up transformer decreases

Answer 36

Amperage

Question 37

A step down transformer decreases

Answer 37

Voltage

Question 38

Heavily insulated coiled wound around a circle or square

Answer 38

Closed core

Question 39

Both primary and secondary could are wound around a central core

Answer 39

Shell type

Question 40

process by which the magnetic field of a coil induced an electromagnetic field in the coil itself

Answer 40

self induction

Question 41

operates on the principle of self induction

Answer 41

Auto transformers