direct current dc basic terms

Question 1

what is a unit of measurement used to express the flow of electrons.

Answer 1

ampere/amp/A

Question 2

what is a device consisting of a number of primary voltiac cells (cells that cannot be recharged) or secondary cells (cells that can be charged) connected in series to obtain a DC voltage.

Answer 2

battery

Question 3

what is an electrical component used to store electrical energy in the form of an electrostatic field

Answer 3

capacitor

Question 4

what is a common building block of electrical circuits that easily permits the movement of electrons from a electrical source to a load and back to the electrical source with a minimum resistance.

Answer 4

conductor

Question 5

what is a basic unit of electrical quantity

Answer 5

a coulomb
a coulomb is equal to 6.28 billion

Question 6

what is the flow of electrons through a conductor

Answer 6

current flow
current

Question 7

what is the flow of electrons in one direction throughout a circuit with constant voltage and current.

Answer 7

direct current

Question 8

what is a negatively charged subatomic particles that are located and travel around (orbit) the nucleus in an imaginary sphere or shell at the speed of light (186,000 Miles/second).

Answer 8

ELECTRONS

Question 9

what is the force that causes electrons to flow through a conductor. and what is its unit of measurement.

Answer 9

EMF (electro magnetic force)
measured in volts

Question 10

what is the basic unit of a capacitance

Answer 10

a farad

Question 11

what is the basic unit of measurement for inductance of a electrical coil

Answer 11

Henry (H)

Question 12

what is a inductor

Answer 12

a inductor is a winding, or coiling of multiple turns of a wire

Question 13

what is a material or device used to prevent the passage of heat, electricity, or sound from one medium to another

Answer 13

insulator

Question 14

what is the left hand rule

Answer 14

this rule is for determining the direction of movement of a current-carrying conductor in a magnetic field

Question 15

what is magnetic permeability

Answer 15

the measure of ease that lines of flux travel through a material

Question 16

what is magnetism

Answer 16

it is the ability of a magnetic to attract certain materials containing iron to influence electrons.

Question 17

what are metric prefixes

Answer 17

the measurements relating or using the metric system of measurement

Question 18

what is a neutron

Answer 18

a neutral subatomic particles that exist within the nucleus of all atoms

Question 19

what is a unit of electrical opposition to the flow of current

Answer 19

an ohm

Question 20

what is ohms law

Answer 20

ohms law states that “the amount of current flowing in a circuit is directly proportional to the circuit voltage and inversely proportional to the circuit resistance.

Question 21

what is a positively charged subatomic particles that exist within the nucleus of all atoms

Answer 21

protons

Question 22

what is the electrical characteristic of a conductor

Answer 22

resistance
resistance is the force that opposes or slows down another force, drops voltage, and consumes power

Question 23

what is a short way od expressing a given number as a number between 1 and 10 multiplied by 10 to the appropriate power

Answer 23

scientific notation

Question 23

what is an electrical charge that may be built up on non-conductive surface by friction

Answer 23

static electricity

Question 24

what is the basic unit of electrical pressure

Answer 24

volts

Question 25

what is the basic unit of power that is the product of voltage multiplied by current

Answer 25

watts

Question 25

what is the maximum amount of dc voltage that can be safely applied across a capacitor called

Answer 25

working voltage