RETA: BASIC ELECTRICITY Questions
Sheets (all book chapters) all
answered
What is the smallest divisible element of matter? - correct answer ✔✔ atom
What are the three components of an atom? - correct answer ✔✔ electron, proton, neutron
Which components of the atom determine whether it is copper, carbon, or some other
element?
a. number of neutrons
b. number of protons
c. number of electrons
d. number of valences - correct answer ✔✔ b. number of protons
What characteristic of an atom causes an element to be a good conductor?
a. weak valence electron bonding
b. strong valence electron bonding
c. number of electrons
d. number of protons - correct answer ✔✔ a. weak valence electron bonding
Which item is not a conductor?
a. tin
b. plastic
c. copper
,d. steel - correct answer ✔✔ b. plastic
Which item is not an insulator?
a. glass
b. plastic
c. wood
d. aluminum - correct answer ✔✔ d. aluminum
What metal is the most commonly used conductor? - correct answer ✔✔ copper
What is the electrical force which causes current to flow called? - correct answer ✔✔
electromotive force (EMF)
What determines the required size of wire for a circuit? - correct answer ✔✔ current
In what unit is electrical power expressed? - correct answer ✔✔ watts
How is electrical energy consumption calculated? - correct answer ✔✔ power x time
The resistance of a wire depends on what four factors? - correct answer ✔✔ material, length,
cross section, and temperature
What is the effect on a circuit when the wire diameter is reduced? - correct answer ✔✔ current
carrying capacity is reduced
What effect does an increase in temperature have on the resistance of a copper wire? - correct
answer ✔✔ resistance goes up
, What are the two requirements for current flow? - correct answer ✔✔ a complete circuit and
voltage potential
In a simple resistive circuit, what happens to electrical energy? - correct answer ✔✔ it is
converted to heat
All matter consists of chemical compounds and elements, which are made up of the basic
building block of nature ... the ? - correct answer ✔✔ atom
What is the smallest divisible element of matter? - correct answer ✔✔ the atom
The atom consists of 2 parts : - correct answer ✔✔ the nucleus and the electrons
The nucleus consists of 2 parts: - correct answer ✔✔ protons and neutrons
Protons are ___ charged - correct answer ✔✔ positively
Neutrons are electrically ___ - correct answer ✔✔ neutral
T or F: The number of protons in an atom determines the nature of the atom - correct answer
✔✔ true
The metallic elements all have the common characteristic that their valence electrons are rather
___ bonded to the atom - correct answer ✔✔ loosely
Valence electrons are the ___ electrons - correct answer ✔✔ outermost
Sheets (all book chapters) all
answered
What is the smallest divisible element of matter? - correct answer ✔✔ atom
What are the three components of an atom? - correct answer ✔✔ electron, proton, neutron
Which components of the atom determine whether it is copper, carbon, or some other
element?
a. number of neutrons
b. number of protons
c. number of electrons
d. number of valences - correct answer ✔✔ b. number of protons
What characteristic of an atom causes an element to be a good conductor?
a. weak valence electron bonding
b. strong valence electron bonding
c. number of electrons
d. number of protons - correct answer ✔✔ a. weak valence electron bonding
Which item is not a conductor?
a. tin
b. plastic
c. copper
,d. steel - correct answer ✔✔ b. plastic
Which item is not an insulator?
a. glass
b. plastic
c. wood
d. aluminum - correct answer ✔✔ d. aluminum
What metal is the most commonly used conductor? - correct answer ✔✔ copper
What is the electrical force which causes current to flow called? - correct answer ✔✔
electromotive force (EMF)
What determines the required size of wire for a circuit? - correct answer ✔✔ current
In what unit is electrical power expressed? - correct answer ✔✔ watts
How is electrical energy consumption calculated? - correct answer ✔✔ power x time
The resistance of a wire depends on what four factors? - correct answer ✔✔ material, length,
cross section, and temperature
What is the effect on a circuit when the wire diameter is reduced? - correct answer ✔✔ current
carrying capacity is reduced
What effect does an increase in temperature have on the resistance of a copper wire? - correct
answer ✔✔ resistance goes up
, What are the two requirements for current flow? - correct answer ✔✔ a complete circuit and
voltage potential
In a simple resistive circuit, what happens to electrical energy? - correct answer ✔✔ it is
converted to heat
All matter consists of chemical compounds and elements, which are made up of the basic
building block of nature ... the ? - correct answer ✔✔ atom
What is the smallest divisible element of matter? - correct answer ✔✔ the atom
The atom consists of 2 parts : - correct answer ✔✔ the nucleus and the electrons
The nucleus consists of 2 parts: - correct answer ✔✔ protons and neutrons
Protons are ___ charged - correct answer ✔✔ positively
Neutrons are electrically ___ - correct answer ✔✔ neutral
T or F: The number of protons in an atom determines the nature of the atom - correct answer
✔✔ true
The metallic elements all have the common characteristic that their valence electrons are rather
___ bonded to the atom - correct answer ✔✔ loosely
Valence electrons are the ___ electrons - correct answer ✔✔ outermost
