ELECTRICAL SYSTEMS FINAL EXAM
QUESTIONS WITH 100% CORRECT
DETAILED A+
, Materials that allow electricity to flow through them easily such as copper are called -
ANSWERConductors
Materials that don't allow electricity to flow through them easily are called -
ANSWERInsulators
This is the measurement of electric current or flow of electrtons - ANSWERAmpere
This is the measurement of electromotive force or potential difference - ANSWERVolts
This is the measurement of resistance to the flow of electricity - ANSWEROhm
This is a measurement of energy used per unit of time - ANSWERWatt
What is the Ohms Law Formula - ANSWERV = IR
The tighter the coil is on the transformer - ANSWERthe higher the voltage
A cycle within electricity goes from 0-360 degrees how many cycles in a second is
standard in the United States - ANSWER60 Hertz
What two principles are key to a transformer - ANSWERElectromagnetic &
Electromagnetic induction
What is electricity? - ANSWERA type of energy fueled by the transferof electrons from
positive to negative
What is the difference between power and energy? - ANSWERPower is energy at a
specific time and energy includes a time constraint (Power * time)
In a series circuit how do you calculate total resistance? - ANSWERRT = R1 + R2 + R3
In a parallel circuit how do you calculate total resistance? - ANSWER1/RT = 1/R1 +
1/R2 + 1/R3
What do the acronyms AC & DC stand for and what is the main difference between the
two? - ANSWERAlternating Current & Direct Current. Electrons flow in one direction in
DC and in AC they flow forward and then backward a little bit.
What is the function of the hot wire? - ANSWERThe hot wire is the conductor providing
volts.
What is the function of the neutral wire? - ANSWERIt provides return path for the volts
QUESTIONS WITH 100% CORRECT
DETAILED A+
, Materials that allow electricity to flow through them easily such as copper are called -
ANSWERConductors
Materials that don't allow electricity to flow through them easily are called -
ANSWERInsulators
This is the measurement of electric current or flow of electrtons - ANSWERAmpere
This is the measurement of electromotive force or potential difference - ANSWERVolts
This is the measurement of resistance to the flow of electricity - ANSWEROhm
This is a measurement of energy used per unit of time - ANSWERWatt
What is the Ohms Law Formula - ANSWERV = IR
The tighter the coil is on the transformer - ANSWERthe higher the voltage
A cycle within electricity goes from 0-360 degrees how many cycles in a second is
standard in the United States - ANSWER60 Hertz
What two principles are key to a transformer - ANSWERElectromagnetic &
Electromagnetic induction
What is electricity? - ANSWERA type of energy fueled by the transferof electrons from
positive to negative
What is the difference between power and energy? - ANSWERPower is energy at a
specific time and energy includes a time constraint (Power * time)
In a series circuit how do you calculate total resistance? - ANSWERRT = R1 + R2 + R3
In a parallel circuit how do you calculate total resistance? - ANSWER1/RT = 1/R1 +
1/R2 + 1/R3
What do the acronyms AC & DC stand for and what is the main difference between the
two? - ANSWERAlternating Current & Direct Current. Electrons flow in one direction in
DC and in AC they flow forward and then backward a little bit.
What is the function of the hot wire? - ANSWERThe hot wire is the conductor providing
volts.
What is the function of the neutral wire? - ANSWERIt provides return path for the volts
