ch.4 ws #2

Question 1

If a material has high permeability, is it easy or hard to magnetize?

Answer 1

easy

Question 2

what device can be used to detect magnetism?

Answer 2

compass

Question 3

a set of christmas lights designed so that if one bulb burns out they all will burn would be an example of a ____ circuit?

Answer 3

series

Question 4

If a material has high retentivity, is it easy or hard to demagnetize?

Answer 4

hard

Question 5

In _____ field theory of electromagnetic radiation, force is proportional to the product of the magnetic pole strengths divided by the square of the distance between them?

Answer 5

Maxwells

Question 6

If two poles of a magnet are put together, they will be?

Answer 6

Repelled

Question 7

_______ are typically produced by charging them in a field of an electromagnet?

Answer 7

Temporary Magnets

Question 8

What are the three metals used to make alnico?

Answer 8

aluminum, nickel, cobalt

Question 9

the geographic North Pole is a magnetic ___ pole

Answer 9

South

Question 10

The S.I unit of magnetic field strength is the ?

Answer 10

Tesla

Question 11

Materials that are highly attracted to a magnet are called?

Answer 11

Ferromagnetic

Question 12

In what direction do magnetic flux lines travel inside the magnet?

Answer 12

South to North

Question 13

In what direction do magnetic flux lines travel in space?

Answer 13

North to South

Question 14

Give 2 examples of magnetic materials

Answer 14

Iron and Nickel

Question 15

Give 2 examples of non magnetic materials

Answer 15

wood and glass

Question 16

What is the equation of Ohms Law

Answer 16

V=IR

Question 17

What never changes in a series circuit?

Answer 17

Amp

Question 18

What never changes in a parallel circuit?

Answer 18

Voltage