Question 1

Technician A says current will increase with a decrease in resistance.Technician B says current will decrease with an increase in resistance.Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Accepted Answer

According to Ohm's Law (V = IR), where V is voltage, I is current, and R is resistance, if resistance decreases, current increases (Technician A is correct), and if resistance increases, current decreases (Technician B is correct).

Question 2

Semiconductors are devices made from materials that are between those of conductors and insulators.

Accepted Answer

Semiconductors are made from materials that have electrical conductivity between that of a conductor (like copper) and an insulator (like glass), allowing them to control electrical current flow.

Question 3

Electromotive force is measured in volts.

Accepted Answer

Electromotive force is indeed measured in volts.

Question 4

____________________ are solid-state switches that contain no moving parts.

Accepted Answer

The answer of ____________________ are solid-state switches that contain no...

Question 5

____________________ join wires together or to a component.

Accepted Answer

The answer of ____________________ join wires together or to a...

Question 6

The unit for measuring electrical resistance is _____.
A)amperes
B)ohms
C)volts
D)watts

Accepted Answer

The unit for measuring electrical resistance is ohms, which is represented by the symbol Ω. Amperes (A) measure electric current, volts (V) measure electric potential or voltage, and watts (W) measure power.

Question 7

All the following are used as circuit protection EXCEPT:
A)fuses
B)relays
C)circuit breakers
D)fuse links

Accepted Answer

Relays are used to control a high-power or high-voltage circuit with a low-power signal. They are not designed to protect circuits from overcurrent or short circuits like fuses, circuit breakers, and fuse links are.

Question 8

Which statement concerning series circuits is NOT true?
A)The sum of the voltage drops equals the source voltage
B)The amount of current [amperes] flowing through the circuit is the same throughout the circuit
C)The voltage drop across each load is different if the resistance of the loads is different
D)The total resistance is equal to the lowest resistance in the circuit

Accepted Answer

The total resistance is equal to the sum of all the resistances in the circuit, not just the lowest resistance.

Question 9

___________ are used to open a circuit with excessive current flow and reset after they are opened.
A)Fuses
B)Fuse links
C)Relays
D)Circuit breakers

Accepted Answer

Circuit breakers are designed to open a circuit automatically when excessive current flow is detected, and they can be reset after tripping, unlike fuses which need to be replaced.

Question 10

Electricity is the flow of protons from one atom to another.

Accepted Answer

Electricity is the flow of electrons, not protons.

Question 11

What is the current in a 12-volt circuit with a 6-ohm resistor connected series?
A)2 amps
B)4 amps
C)6 amps
D)12 amps

Accepted Answer

Using Ohm's Law, which is I = V/R (where I is current, V is voltage, and R is resistance), the current in the circuit is calculated as I = 12V / 6Ω = 2 amps.

Question 12

The unit for measuring electrical current is _____.
A)amperes
B)ohms
C)volts
D)watts

Accepted Answer

Electrical current is measured in amperes, which is commonly abbreviated as "amps". Ohms are the unit of measurement for resistance, volts are the unit of measurement for voltage, and watts are the unit of measurement for power.

Question 13

The process of a magnetic field causing a current to flow in a conductor due to the movement of magnetic fields across the conductor is ____________________.

Accepted Answer

The answer of The process of a magnetic field causing...

Question 14

____________________ are materials that do not readily gain or lose electrons in their outer rings.

Accepted Answer

The answer of ____________________ are materials that do not readily...

Question 15

Amperage is used to define the amount of electrical current flow that is occurring at a particular point.

Accepted Answer

Amperage, measured in amperes (amps), quantifies the amount of electrical current flowing through a conductor at any given point, indicating the rate of electron flow.

Question 16

What is the name of the formula E = I x R?
A)Ampere's law
B)Voltaire's law
C)Watt's law
D)Ohm's law

Accepted Answer

This formula is commonly known as Ohm's law, which states that the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor.

Question 17

A series circuit provides two or more different paths for current flow.

Accepted Answer

A series circuit provides only one path for current flow through all the components connected in series.

Question 18

Series circuits have all the parts of the circuit in a ____________________ path.

Accepted Answer

The answer of Series circuits have all the parts of...

Question 19

Which of the following statements is NOT true?
A)Voltage and volts are used to define an amount of electrical potential.
B)Voltage drop is the amount of voltage that is being used by a component, wire, or a connection.
C)Amperage is the amount of electrical current flow.
D)Direct current flows only from zero to negative.

Accepted Answer

Direct current (DC) flows in one direction only, from positive to negative, not from zero to negative as stated. This is a fundamental characteristic of DC, distinguishing it from alternating current (AC) which periodically reverses direction.

Question 20

The unit for measuring electrical pressure (force) is _____.
A)amperes
B)ohms
C)volts
D)watts

Accepted Answer

The unit for measuring electrical pressure is volts. Amperes measure electrical current, ohms measure electrical resistance, and watts measure electrical power.

Quiz 17: Electricalelectronic System Principles

Technician A says current will increase with a decrease in resistance.Technician B says current will decrease with an increase in resistance.Who is correct?

Semiconductors are devices made from materials that are between those of conductors and insulators.

Electromotive force is measured in volts.

____________________ are solid-state switches that contain no moving parts.

____________________ join wires together or to a component.

The unit for measuring electrical resistance is _____.

All the following are used as circuit protection EXCEPT:

Which statement concerning series circuits is NOT true?

___________ are used to open a circuit with excessive current flow and reset after they are opened.

Electricity is the flow of protons from one atom to another.

What is the current in a 12-volt circuit with a 6-ohm resistor connected series?

The unit for measuring electrical current is _____.

The process of a magnetic field causing a current to flow in a conductor due to the movement of magnetic fields across the conductor is ____________________.

____________________ are materials that do not readily gain or lose electrons in their outer rings.

Amperage is used to define the amount of electrical current flow that is occurring at a particular point.

What is the name of the formula E = I x R?

A series circuit provides two or more different paths for current flow.

Series circuits have all the parts of the circuit in a ____________________ path.

Which of the following statements is NOT true?

The unit for measuring electrical pressure (force) is _____.