Deck 5: Practical Electrical Theory

Question 1

Direct current is electron flow that flows in one direction and then reverses at regular intervals.

Answer 1

False

Question 2

What is the current for a 120-volt load that has a resistance of 5 ohms?

A) 24 amps
B) 10 amps
C) 2 amps
D) 4 amps

Answer 2

A

Question 3

A(n) ______ is the unit of current flow.

A) watt
B) charge
C) coulomb
D) ampere

Answer 3

D

Question 4

The law of _____ states that opposite charges attract whereas like charges repel.

A) centrifugal force
B) elements
C) matter
D) charges

Question 5

_____ deals with the association between voltage and current and a material's ability to conduct electricity.

A) Ohm's law
B) Conventional current flow theory
C) Electron theory
D) Voltage law

Question 6

GFCIs are used to prevent people from being electrocuted.

Question 7

A watt (W) is the power used when 10 ampere flows with a potential difference of 100 volt.

Question 8

_____ is the potential electrical difference for electron flow from one line to another in an electrical circuit.

A) Watt
B) Voltage
C) Charge
D) Ampere

Question 9

Continuous load is a load where the maximum current is expected to continue for three hours or more.

Question 10

The law of _____ states that a spinning object will pull away from its center point and that the faster it spins, the greater the force will be.

A) centrifugal force
B) elements
C) matter
D) charges

Question 11

One _______ is the amount of electric charge transported in one second by one ampere of current.

A) valence shell
B) element
C) coulomb
D) electron

Question 12

An emergency circuit is intended to supply illumination and power automatically to designated areas and equipment when the normal source of power fails.

Question 13

Alternating current is electron flow in only one direction; used in the industry only for special applications such as solid-state modules and electronic air filters.

Question 14

A(n) _______ is the outermost shell of an atom.

A) valence shell
B) element
C) coulomb
D) electron

Question 15

Watt is a unit of temperature applied to electron flow. One watt equals 3.414 Btu.

Question 16

Ohm's law is the relationship between voltage and current and a material's ability to conduct electricity.

Question 17

Voltage is the potential electrical difference for electron flow from one line to another in an electrical circuit.

Question 18

A(n) ____ is the smallest particle of an element.

A) molecule
B) matter
C) atom
D) simple compound

Question 19

______ is a substance that takes up space and has weight.

A) Molecule
B) Matter
C) Atom
D) Simple compound

Question 20

A kilowatt is equal to 1000 W.