Basic Electricity Theory

Question 1

Describe Electrostatic Force

Answer 1

the attraction between electrons in the shells and protons in the nucleus

Question 2

Describe Electrostatic field

Answer 2

An electrostatic field is a physical field surrounding electrically charged particles, describing the forces they exert on each other.

Question 3

Describe Potential Difference

Answer 3

the term used to describe
how large the electrostatic force is between two
charged objects, measured in volts, also called “voltage”

Question 4

Describe electromotive force (EMF). What is it measured in?

Answer 4

sum of the potential differences of all
charged particles in the electrostatic field,

Question 5

Describe ion charge

Answer 5

An atom that has lost or gained one or
more electrons

Question 6

Define conductor and give an example.

Answer 6

materials with outer shell
(valence) electrons that are loosely bound to their
atoms, or materials that permit free motion of a
large number of electrons.
Examples are copper, gold, silver, etc. (most metals)

Question 7

Define insulator and give an example.

Answer 7

materials with outer shell (valence) electrons that are tightly
bound to their atoms and require large amounts of
energy to free them from the influence of the
nucleus
Examples: rubber, plastics, glass, dry wood

Question 8

Define resistor and give an example

Answer 8

materials that conduct
electricity, but offer opposition to current flow. also called semiconductors.
Examples: carbon, silicon, germanium, tin, and lead

Question 9

Define electron current flow

Question 10

Define conventional current flow

Question 11

Define direct current (DC)

Question 12

Define alternating current (AC)

Question 13

Define ideal source

Question 14

Define real source

Question 15

Give unit of measurement and relationship to other parameters of voltage

Question 16

Give unit of measurement and relationship to other parameters of current

Question 17

Give unit of measurement and relationship to other parameters of resistance

Question 18

Give unit of measurement and relationship to other parameters of conductance

Question 19

Give unit of measurement and relationship to other parameters of power

Question 20

Give unit of measurement and relationship to other parameters of inductance

Question 21

Give unit of measurement and relationship to other parameters of capacitance

Question 22

Give unit of measurement and relationship to other parameters of impedance

Question 23

What is electricity?

Answer 23

The flow of electrons through simple materials and devices or the force that moves electrons

Question 24

What is a volt?

Answer 24

the amount of force required to move one ampere of current through one ohm of resistance