DC Terms

Question 1

What is Direct Current?

Answer 1

Flow of electrons in one direction throughout a circuit with constant voltage and current

Question 2

Atoms

Answer 2

Represent the smallest elements that exist in nature, building blocks of which all other elements are made

Question 3

Protons

Answer 3

Positively charged subatomic particles that exist within the nucleolus of all atoms

Question 4

Neutrons

Answer 4

Neutral subatomic particles that exist within the nucleolus of all atoms

Question 5

Electron

Answer 5

Negatively charged subatomic particles that are located and travel around the nucleus in an imaginary sphere or shell at the speed of light

Question 6

Conductor

Answer 6

Easily permits the movement of electrons from an electrical source to a load and back to the electrical source with minimum resistance

Question 7

Insulator

Answer 7

Material of device used to prevent the passage of heat, electricity, or sound from one medium to another

Question 8

Static Electricity

Answer 8

Electrical charge that may be built up on a non-conductive surface by friction

Question 9

Voltage

Answer 9

Electric potential energy per unit charge, measured in joules per coulomb

Question 10

Coulomb

Answer 10

Basic unit of electrical charge

Question 11

Joules

Answer 11

The amount of electrons in a suspended state as compared to the amount of electrons in an adjacent part of the circuit

Question 12

EMF

Answer 12

The force required to move an electron

Question 13

Volt

Answer 13

Basic unit of measure of electrical pressure

Question 14

Current

Answer 14

The flow of electricity

Question 15

Ampere

Answer 15

Measure used to express the flow of electrons (current)

Question 16

Resistance

Answer 16

The electrical opposition to current flow of a conductor

Question 17

Ohm

Answer 17

Unit that resistance is measured in

Question 18

Ohms law

Answer 18

The amount of current flowing in a circuit is directly proportional to the circuit voltage and inversely proportional to the circuit resistance

Question 19

Watts

Answer 19

Basic unit of electrical power that is the product of voltage multiplied by current

Question 20

Series Circuit

Answer 20

A circuit where the current has only one path to flow from the source and back

Question 21

Parallel Circuit

Answer 21

A circuit that offers several paths for current to flow

Question 22

Series Parallel Circuits

Answer 22

A circuit that has both properties of series and parallel

Question 23

Capacitor

Answer 23

Stores electrical energy in the form of an electrostatic field

Question 24

Battery

Answer 24

Stores chemical energy and makes the energy available in the electrical form

Question 25

Magnetism

Answer 25

Ability of a magnet to attract certain materials containing iron and other ferrous material

Question 26

Magnetic Permeability

Answer 26

How easy lines of magnetic flux travel through a material

Question 27

Magnetic Field

Answer 27

Current flows in a conductor, this field is also produced around the conductor

Question 28

Left Hand Rule

Answer 28

Refers to generators, used to determine the direction of movement of electrons of a current carrying conductor in a magnetic field

Question 29

Henry

Answer 29

Basic unit of measurement for induction

Question 30

Farad

Answer 30

Unit of measure for a capacitor