Question 1

Opposition to the flow of electrons is called _____.&#10;A) voltage&#10;B) inductance&#10;C) conductance&#10;D) resistance

Accepted Answer

Resistance is the correct term for opposition to the flow of electrons in an electrical circuit.

Question 2

Atoms that have from one to four electrons in their last, or outer, shell are generally good conductors of electricity.

Accepted Answer

Atoms with one to four electrons in their outer shell tend to lose electrons easily, which allows them to conduct electricity. This is because the movement of electrons is what constitutes electrical current.

Question 3

An electrostatic generator develops a voltage using ____.&#10;A) induction&#10;B) chemicals&#10;C) friction&#10;D) light

Accepted Answer

Electrostatic generators, such as Van de Graaff generators, develop voltage through the process of friction, where mechanical energy is converted into electrical energy by transferring charge through contact and separation of materials.

Question 4

The amount of current flowing through a circuit is ____ proportional to the electromotive force (voltage) and ____ proportional to the resistance of the circuit.&#10;A) directly; inversely&#10;B) inversely; directly&#10;C) directly; directly&#10;D) inversely; inversely

Accepted Answer

The relationship between current, voltage, and resistance in a circuit is described by Ohm's Law, which states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) between them. This is mathematically represented as I = V/R.

Question 5

Electrons orbit the nucleus of an atom in arranged rings called ____ .&#10;A) spheres&#10;B) ovals&#10;C) shells&#10;D) capsules

Accepted Answer

Electrons orbit the nucleus of an atom in arranged rings known as shells. These shells represent different energy levels.

Question 6

In an electrical circuit, which term indicates the voltage generated by the source, such as a battery or generator?&#10;A) electrical pressure&#10;B) electromotive force&#10;C) resistance&#10;D) current pressure

Accepted Answer

Electromotive force (EMF) is the term used to describe the voltage generated by a source such as a battery or generator. It is the force that drives electrons through a circuit, overcoming resistance.

Question 7

Applying pressure to certain crystals to produce voltage is known as the ____ effect.&#10;A) photovoltaic&#10;B) piezoelectric&#10;C) thermoelectric&#10;D) chemical

Accepted Answer

The piezoelectric effect is the ability of certain materials (such as quartz, certain ceramics, and biological matter such as bone) to generate an electric charge in response to applied mechanical stress. This is why applying pressure to certain crystals to produce voltage is referred to as the piezoelectric effect.

Question 8

What is the unit of measurement for resistance?&#10;A) ohm&#10;B) ampere&#10;C) volt&#10;D) coulomb

Accepted Answer

Ohm is the unit of measurement for electrical resistance, symbolized by the Greek letter omega (Ω).

Question 9

One of the rules for electric charges is that the strength of the attraction or repulsion between charged objects is directly proportional to the distance between them.

Accepted Answer

The strength of the attraction or repulsion between charged objects is inversely proportional to the square of the distance between them, according to Coulomb's law.

Question 10

Rubber and glass are good insulators.

Accepted Answer

Rubber and glass are materials that do not easily allow the flow of electric current, making them good insulators.

Question 11

The total current flowing in a circuit is equal to the total ____ applied to the circuit divided by the total ____ of the circuit.&#10;A) voltage; current&#10;B) resistance; current&#10;C) resistance; voltage&#10;D) voltage; resistance

Accepted Answer

The answer of The total current flowing in a circuit...

Question 12

In order for an object to be in a charged state, which two particles must be in a state of imbalance?&#10;A) protons and electrons&#10;B) protons and neutrons&#10;C) neutrons and electrons&#10;D) atoms and molecules

Accepted Answer

The answer of In order for an object to be...

Question 13

The nucleus of an atom is made up of protons, which have a positive charge and neutrons, which have a negative charge.

Accepted Answer

The answer of The nucleus of an atom is made...

Question 14

Alternating current flows first in one direction and then in the opposite direction.

Accepted Answer

The answer of Alternating current flows first in one direction...

Question 15

Which term means coulombs per second?&#10;A) ohm&#10;B) ampere&#10;C) volt&#10;D) resistance

Accepted Answer

The answer of Which term means coulombs per second?&#10;A) ohm&#10;B)...

Deck 2: Electrical Fundamentals