Question 1

The direct production of an ____ from heat is sometimes referred to as the Seebeck effect.&#10;A)electromagnetic force&#10;B)electromotive force&#10;C)electroconductive force&#10;D)electronic force

Accepted Answer

The Seebeck effect refers to the direct production of an electromotive force (EMF) from heat. Option A is incorrect because the Seebeck effect does not generate an electromagnetic force. Option C is incorrect because the Seebeck effect does not generate an electroconductive force. Option D is incorrect because the Seebeck effect does not generate an electronic force.

Question 2

Light energy, according to one theory of physics, is transmitted by small particles known as ____.&#10;A)atoms&#10;B)photons&#10;C)electrons&#10;D)photoelectrons

Accepted Answer

According to the theory of quantum mechanics, light energy is transmitted through the interaction of electromagnetic waves with particles known as photons. Photons are considered to be the basic unit of light and possess both wave-like and particle-like properties.

Question 3

Some ceramic materials show a ____ property and can be used in record player pickups.&#10;A)piezoelectric&#10;B)crystal&#10;C)vibrating&#10;D)mezzoelectric

Accepted Answer

Piezoelectric materials have the property of generating an electric charge when subjected to mechanical stress or vibrations, which makes them ideal for use in record player pickups where vibrations are converted into electrical signals.

Question 4

Whenever an electrical current flows, ____ forces are being created.&#10;A)alternating&#10;B)piezoelectric&#10;C)energy&#10;D)magnetic

Accepted Answer

Whenever an electrical current flows, magnetic forces are being created, which is the underlying principle behind electric motors and generators.

Question 5

Electricity and magnetism are two distinctly different and unrelated phenomena.

Accepted Answer

Electricity and magnetism are closely related and interconnected phenomena, as shown by the law of electromagnetism and the existence of electromagnetic waves.

Question 6

The principle of inducing a current flow in a wire when it is moved within a magnetic field is known as ____ induction.&#10;A)electromagnetic&#10;B)magnetic&#10;C)dynamic&#10;D)static

Accepted Answer

The principle described in the question is known as electromagnetic induction, which involves the creation of an electric current in a wire when it moves through a magnetic field. Choice B) magnetic is too general and doesn't specify the type of induction taking place. Choices C) dynamic and D) static do not accurately describe the principle being discussed.

Question 7

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

Accepted Answer

Thermoelectric effects have been known since the early 1800s, but their practical applications for generating electricity were not developed until the mid-20th century.

Question 8

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

Accepted Answer

This phenomenon is known as the piezoelectric effect and is observed in certain materials like quartz, ceramics, and some polymers.

Question 9

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

Accepted Answer

Electrolysis does use an electrical current to produce chemical changes. It involves the oxidation and reduction of ions in an electrolyte solution, resulting in the desired chemical reaction.

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.

Accepted Answer

This is true as the sun's energy is responsible for photosynthesis in plants, which is the foundation of the food chains on our planet, and also for providing warmth and light necessary for the survival of many species.

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.

Accepted Answer

The answer of More often than not, the conversion process...

Question 12

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

Accepted Answer

The answer of Frictional heat causes surface atoms to give...

Question 13

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

Accepted Answer

The answer of Magnetic crystals are used in small earphones,...

Question 14

An obvious application for ____ is found in the generation of voltages from chemical batteries.&#10;A)thermocoupling&#10;B)piezoelectricity&#10;C)electrolysis&#10;D)electromagnetism

Accepted Answer

The answer of An obvious application for ____ is found...

Question 15

The open-circuit voltage of a solar cell is about ____ volt.&#10;A)0.25&#10;B)0.5&#10;C)0.75&#10;D)0.9

Accepted Answer

The answer of The open-circuit voltage of a solar cell...

Question 16

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

Accepted Answer

The answer of The word cell refers to a basic...

Question 17

Increased voltage output can be achieved when several thermocouples are placed in a series called a ____.&#10;A)battery&#10;B)thermos&#10;C)heated junction&#10;D)thermopile

Accepted Answer

The answer of Increased voltage output can be achieved when...

Question 18

Some cells are classified as ____ cells because their chemical materials are used up as electrical energy is being produced.&#10;A)tertiary&#10;B)secondary&#10;C)primary&#10;D)alternative

Accepted Answer

The answer of Some cells are classified as ____ cells...

Question 19

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

Accepted Answer

The answer of Thermopile is the name given to devices...

Question 20

Cells and batteries have a fixed polarity, which gives rise to a ____ current flow.&#10;A)direct&#10;B)neutral&#10;C)multi-directional&#10;D)unidirectional

Accepted Answer

The answer of Cells and batteries have a fixed polarity,...

Deck 2: Electricity Production and Use