Physics Unit 2

Question 1

The process where electrons are removed or added to a body of matter, is called

Answer 1

Electrification

Question 2

The electrostatic force between two charges is____ proportional to the square of the distance between them

Answer 2

Indirectly

Question 3

What device can detect the presence of an electrical charge?

Answer 3

Electroscope

Question 4

Electrostatics is the branch of physics dealing with charges____

Answer 4

At rest

Question 5

A____ charged object has an excess of electrons

Answer 5

Negatively

Question 6

The removal of electrons from one object, by rubbing it with another of a different kind is called electrification by____

Answer 6

Friction

Question 7

When a charged body touches an uncharged body, the uncharged body acquired the same charge, and is called electrification by____

Answer 7

Contact

Question 8

Electrical charges

Answer 8

On the external surface of a conductor

Question 9

The greatest concentration of charges will

Answer 9

Reside on the sharpest, external curvature of a conductor

Question 10

If you increase the charges of two negatively charged objects, the electrostatic force between them____

Answer 10

Increases

Question 11

The process of electrification, when electrical field act upon one another, without touching is known as

Answer 11

Induction

Question 12

T/F electrification by induction is the simplest method of electrification

Answer 12

False

Question 13

T/F in order for electrons to flow. There must be equal charges at both ends of the pathway.

Answer 13

False

Question 14

T/F super conductors, have the ability to conduct or insulate electron flow

Answer 14

False

Question 15

T/F Electrons in an electrical current always move in the same direction

Answer 15

False

Question 16

T/F electrostatics is also called static electricity

Answer 16

True

Question 17

T/F titanium is an example of a non-conductor

Answer 17

False

Question 18

T/F if an object has a deficiency of electrons it has a positive charge

Answer 18

True

Question 19

T/F the longer the conductor, the less resistance it has to electric current

Answer 19

False

Question 20

T/F the unit of resistance is Ohms

Answer 20

True

Question 21

T/F if you increase the temperature of a conductor, you decrease resistance

Answer 21

False

Question 22

T/F if a circuit is open, current will not flow

Answer 22

True

Question 23

Which method of electrification is of most important to the radiographer

Answer 23

Induction

Question 24

In solid conductors,_____ charges are stationary

Answer 24

Positive

Question 25

Which of the following statements is true regarding electrolysis

Answer 25

Electrolysis is the electron movement through an ionic solution

Question 26

The device that converts chemical energy to electrical energy is known as a

Answer 26

Battery

Question 27

The device that converts mechanical energy to electrical energy is known as a

Answer 27

Generator

Question 28

______ is termed as the quantity of electrons flowing

Answer 28

Current

Question 29

_____ is termed for the number of electrons in excess, at one end of the circuit and a deficiency at the other

Answer 29

Potential difference

Question 30

_____ is termed for the strength or force of electron flow

Answer 30

Potential difference

Question 31

_____ is termed for the opposition to current flow in a circuit

Answer 31

Resistance

Question 32

Potential difference

Answer 32

Volt

Question 33

Current

Answer 33

Ampere

Question 34

Resistance

Answer 34

Ohms

Question 35

Power

Answer 35

Watt

Question 36

As the cross-sectional diameter of a conductor increases resistance will

Answer 36

Decrease

Question 37

In a conductor as temperature increases, resistance_____

Answer 37

Increases

Question 38

Series

Answer 38

Has one complete pathway for current flow, current is the same for each component, current stops with any break

Question 39

Parallel

Answer 39

Current for each resistor may differ, adding resistors, reduce resistance, break in one branch, has no effect on others

Question 40

Circuit breakers are sometimes used to decrease the occurrence of a short circuit because of an increase in____

Answer 40

Amperage

Question 41

Which end of the pole is the source of electrons?

Answer 41

Negative pole

Question 42

What term is used to describe the maximum potential difference between positive and negative ends of a source

Answer 42

EMF

Question 43

T/F Creating a pathway for electrons to move between a charge body in the Earth is called grounding

Answer 43

True