Chapter 36

Question 1

Ammeter

Answer 1

An instrument for measuring electric current in amperes

Question 2

electromagnet

Answer 2

magnet with a field produced by electric current; usually in the form of a wire coiled around a piece of iron

Question 3

Galvanometer

Answer 3

An instrument for detecting and measuring small electric currents

Question 4

Magnetic declination

Answer 4

the angle between magnetic north and true north

Question 5

Magnetic domains

Answer 5

a region within a magnetic material which has uniform magnetization

Question 6

Magnetic field

Answer 6

a force filed that fills the space around every magnet or current-carrying wire.

Question 7

Magnetic field lines

Answer 7

A field line is a locus that is defined by a vector field and a starting location within the field

Question 8

magnetic force

Answer 8

A force that exists between two electrically charged moving particles

Question 9

magnetic pole

Answer 9

one of the regions on a magnet that produces magnetic force

Question 10

magnetism

Answer 10

The class of phenomena exhibited by a magnetic field

Question 11

MRI

Answer 11

magnetic reasoning imaging; a medical technique that uses radiology to visualize internal structure of the body

Question 12

mulitimeter

Answer 12

an electronic instrument used to measure voltage, current, and resistance in a substance

Question 13

north pole

Answer 13

• the end of a magnet that points northward

- attract south poles; repel north poles

Question 14

south pole

Answer 14

• the end of a magnet that points southward

- attract north poles; repel south poles

Question 15

superconducting magnets

Answer 15

an electromagnet made from coils of superconducting wire

Question 16

voltmeter

Answer 16

an instrument used for measuring electrical potential difference between two points in an electric circuit