Ch. 10

Question 0

Two objects will attract each other electrically only if

Answer 0

One is positive and one is negative

Question 1

Which of the following could not happen when two charged objects touch each other?

Answer 1

Several seconds pass and then the objects fly apart

Question 2

An electrical charge is usually produced by the removed or addition of

Answer 2

Electrons

Question 3

Lines of force represent election fields through their

Answer 3

Direction

Closeness

Question 4

Charging an object without actually adding or removing electrons is called

Answer 4

Electrical induction

Question 5

A mechanical electro scope cannot detect

Answer 5

A small charge

Question 6

Which of the following is a conductor?

Answer 6

Gold

Question 7

Which of the falling is a insulator?

Answer 7

Rubber

Question 8

Capacitors contain

Answer 8

Insulators only

Question 9

What part of a circuit is designed to turn electricity into another form of energy

Answer 9

Electrical load

Question 10

Conventional current

Answer 10

Is the opposite the flow of electrons in a conductor

Question 11

The unit for potential difference is

Answer 11

Volt

Question 12

Which part of a circuit in a home is designed to be replaced if it stops a circuit overload?

Answer 12

Fuse

Question 13

What is the major difference between static and current electricity?

Answer 13

Static is stationary electricity

Current is moving electricity

Question 14

What force causes the leaves in an electroscope to repel each other?

Answer 14

Electrostatic force

Question 15

What is the SI unit for electrical charge?

Answer 15

Coulomb

Question 16

What is the net charge of a dipole?

Answer 16

Zero

Question 17

Descibe how materials are classified in terms of conductivity

Answer 17

Conductors
Insulators
Semiconductors

Question 18

Why does lightening flow through a lightening rod instead of the building it is mounted on?

Answer 18

The wire to the ground is a better conductor than the building itself.

Question 19

Give two practical applications of static electricity

Answer 19

Photo copier

Electrostatic precipitator

Question 20

Describe the movement of electrons through a circuit

Answer 20

Negative to positive

Question 21

What is the difference between how a batter and a generator work?

Answer 21

Batteries are limited sources of electrons. Generators are machines that use the special relationship between electrical and magnetic energy to move electrons through conductors.

Question 22

How does a photovoltaic cell work?

Answer 22

?

Question 23

If a lamp in your house no longer works, and you notice that is has frayed wire, then it probably has developed what?

Answer 23

Short circuit

Question 24

Neutrons do not contribute to electrical charge.

Answer 24

True

Question 25

Most obstacles have an equal number of protons and electrons.

Answer 25

True

Question 26

Lines of electrical force indicate the direction an electron travels if subjected to the field represented.

Answer 26

False

Question 27

Electrical induction does not produce a charged object.

Answer 27

True

Question 28

Static cling is worse in the summer than in winter because summer air is moister and contains more ions.

Answer 28

False

Question 29

An electroscope's leaves separate because they have opposite charges.

Answer 29

False

Question 30

Lightening is an example of an electrical discharge.

Answer 30

True

Question 31

Current can run through only solids, such as electrical wires.

Answer 31

False

Question 32

Direct current is the primary energy source is portable electronic devices.

Answer 32

True

Question 33

A light switch is an example of an electrical switch.

Answer 33

True

Question 34

Photovoltaic cells and electrochemical cells convert the same type of energy to electricity.

Answer 34

False

Question 35

If a Christmas light strand has one built break and all the bulbs go dark, it is most likely wired in a series circuit.

Answer 35

True

Question 36

The ideal circuit arrangement for a household would be a series circuit.

Answer 36

False

Question 37

What summarizes that like charges repel and unlike charges attract?

Answer 37

Law of charges

Question 38

What consists of one or more electrochemical cells that supply electrons released by a chemical reaction?

Answer 38

Battery

Question 39

What instrument detects the presence of charges?

Answer 39

Electroscopes

Question 40

What are modern charge-storage devices called?

Answer 40

Capacitor

Question 41

What is a special device that changes the voltage within portions of a circuit?

Answer 41

Resistor