Chapter 4 Penguins

Question 1

All matter can be classified according to either of _____ with an external magnetic field.

Answer 1

four interactions

Question 2

It is the degree to which a material can be magnetized.

Answer 2

Magnetic Susceptibility

Question 3

These can be made into magnets by induction.

Answer 3

Ferromagnetic Objects

Question 4

The _____ is proportional to the product of the magnetic pole strengths divided by the square of the distance between them.

Answer 4

magnetic force

Question 5

The SI unit of magnet field strength:

Answer 5

Tesla (T)

Question 6

An older unit of magnet field strength:

Answer 6

Gauss (G)

Question 7

One Tesla (T) = ???

Answer 7

10,000 gauss (G)

Question 8

It is measured in units of joule per coulomb, or volt.

Answer 8

Electric Potential

Question 9

Any charge in motion induces a _____.

Answer 9

Magnetic Field

Question 10

What is a coil of wire called?

Answer 10

Solenoid

Question 11

It is a current-carrying coil of wire wrapped around an iron core, which intensifies the induced magnetic field.

Answer 11

Electromagnet

Question 12

When an electric current is induced in a circuit if some part of that circuit is in a changing magnetic field.

Answer 12

Electromagnetic Induction

Question 13

Varying magnetic field intensity induces an _____.

Answer 13

Electric Current

Question 14

What powers the rotating anode of an x-ray tube?

Answer 14

Induction Motor

Question 15

It changes the intensity of alternating voltage and current.

Answer 15

Transformer

Question 16

The _____ has one winding and varies both voltage and current.

Answer 16

autotransformer