Physics - Chapter 5

Question 1

The study of stationary electric charges

Answer 1

Electrostatics

Question 2

What can electrification be created by?

Answer 2

Contact, friction, induction

Question 3

Where is the electric charge of a conductor concentrated?

Answer 3

Along the sharpest curvature of the surface

Question 4

What is the unit of electric potential?

Answer 4

Volt

Question 5

What is the study of electric charges in motion?

Answer 5

Electrodynamics

Question 6

A substance that electrons easily flow

Answer 6

Conductor

Question 7

A material that does not allow electron flow

Answer 7

Insulator

Question 8

A material that behaves as a conductor and a insulator

Answer 8

Semiconductor

Question 9

What results from increasing electric resistance?

Answer 9

Reduced electric current

Question 10

Electrons that flow in only one direction

Answer 10

DC

Question 11

Electrons that flow alternately in opposite directions

Answer 11

AC

Question 12

What does any charged particle in motion create?

Answer 12

Magnetic field

Question 13

The imaginary lines of a magnetic field are always:

Answer 13

Closed loops

Question 14

The ability of a material to attract the lines of magnetic field intensity

Answer 14

Magnetic permeability

Question 15

Materials are weakly repelled by either magnetic pole. They can not be artificially magnetized. They are not attracted to a magnet

Answer 15

Diamagnetic

Question 16

Strongly attracted by a magnet and usually can be permanently magnetized by exposure to a magnetic field

Answer 16

Ferromagnetic

Question 17

Material lie somewhere between ferromagnetic and nonmagnetic. They are very slightly attracted to a magnet

Answer 17

Paramagnetic

Question 18

The small magnet created by the electron orbit

Answer 18

Magnetic dipole

Question 19

The degree to which a material can be magnetized

Answer 19

Magnetic susceptibility

Question 20

Can be made into magnets by induction

Answer 20

Ferromagnetic

Question 21

The SI unit of magnetic field strength

Answer 21

Tesla

Question 22

Electric potential is measured in units of:

Answer 22

Joule per coulomb OR volt

Question 23

What does any charge in motion induce?

Answer 23

Magnetic field

Question 24

What is a coil of wire called?

Answer 24

Solenoid

Question 25

Current carrying coil of wire wrapped around an iron core

Answer 25

Electromagnet

Question 26

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

Answer 26

Electromagnetic induction

Question 27

What induces an electric current

Answer 27

Varying magnetic field intensity

Question 28

What powers the rotating anode of an xray tube?

Answer 28

Induction motor

Question 29

What changes the intensity of alternating voltage and current?

Answer 29

Transformer

Question 30

What has one winding and varies both voltage and current

Answer 30

Autotransformer

Question 31

What governs the interaction of magnetic poles?

Answer 31

Magnetic field

Question 32

What governs the interaction of electrostatic charges?

Answer 32

Electric field

Question 33

Which way does the electric field point from a positive charge?

Answer 33

Outward

Question 34

Which way does the electric field point from a negative charge?

Answer 34

Inward