Deck 2: Electricity Production and Use

Question 1

The direct production of an ____ from heat is sometimes referred to as the Seebeck effect.

A)electromagnetic force
B)electromotive force
C)electroconductive force
D)electronic force

Answer 1

B

Question 2

Light energy, according to one theory of physics, is transmitted by small particles known as ____.

A)atoms
B)photons
C)electrons
D)photoelectrons

Answer 2

B

Question 3

Some ceramic materials show a ____ property and can be used in record player pickups.

A)piezoelectric
B)crystal
C)vibrating
D)mezzoelectric

Answer 3

A

Question 4

Whenever an electrical current flows, ____ forces are being created.

A)alternating
B)piezoelectric
C)energy
D)magnetic

Question 5

Electricity and magnetism are two distinctly different and unrelated phenomena.

Question 6

The principle of inducing a current flow in a wire when it is moved within a magnetic field is known as ____ induction.

A)electromagnetic
B)magnetic
C)dynamic
D)static

Question 7

Thermoelectric effects utilizing temperature differentials to generate an electrical voltage have been known only since the 1950s.

Question 8

Some materials develop opposite electrical charges on opposite sides when they are compressed (or twisted, bent, or stretched).

Question 9

Electrolysis uses an electrical current to produce desirable chemical changes or variations in the properties of certain substances.

Question 10

Most of the life-sustaining energy encountered on our planet is derived from the sun in the form of heat and light energy.

Question 11

More often than not, the conversion process from one type of energy to another is a complex one that requires many intermediate steps.

Question 12

Frictional heat causes surface atoms to give up their valence electrons, giving rise to accumulated, nonmoving charges known as static electricity.

Question 13

Magnetic crystals are used in small earphones, where the crystal magnetizes a diaphragm, causing audible sound waves.

Question 14

An obvious application for ____ is found in the generation of voltages from chemical batteries.

A)thermocoupling
B)piezoelectricity
C)electrolysis
D)electromagnetism

Question 15

The open-circuit voltage of a solar cell is about ____ volt.

A)0.25
B)0.5
C)0.75
D)0.9

Question 16

The word cell refers to a basic arrangement of a chemical substance, the electrolyte, interacting with two similar electrodes.

Question 17

Increased voltage output can be achieved when several thermocouples are placed in a series called a ____.

A)battery
B)thermos
C)heated junction
D)thermopile

Question 18

Some cells are classified as ____ cells because their chemical materials are used up as electrical energy is being produced.

A)tertiary
B)secondary
C)primary
D)alternative

Question 19

Thermopile is the name given to devices that produce a small emf when the junction of two dissimilar metals is being heated.

Question 20

Cells and batteries have a fixed polarity, which gives rise to a ____ current flow.

A)direct
B)neutral
C)multi-directional
D)unidirectional