E01 Electrical Questions And Answers
With Verified Solutions (GRADED A+)
What is current flow in a circuit?
ANSWER: The movement of electrons through a circuit.
What does impedance refer to?
ANSWER: The resistance to the flow of alternating current.
What happens with like charges?
ANSWER: They repel each other.
What is a conductor?
ANSWER: A material that easily releases electrons.
What is the symbol used for current?
ANSWER: "I".
What are the effects of electricity?
ANSWER: It can produce heat, light, and magnetism.
Which material is most suited to be used as a semiconductor?
ANSWER: Silicon.
What is the typical color for a safety ground conductor?
ANSWER: Green.
What type of charge does an electron have?
ANSWER: Negative charge.
What does resistance oppose?
ANSWER: The flow of current.
How many watts are used by a heater operating at 460 volts and drawing 5
amps?
ANSWER: 2300 watts.
Which meter uses its own battery?
ANSWER: Ohmmeter.
, In electrical wiring, what does a black colored wire typically indicate?
ANSWER: It indicates the hot conductor.
How are fuses sized?
ANSWER: By volts and watts.
What happens when two 120-volt motors are wired in series, with one being
60 watts and the other 4 watts?
ANSWER: Only the 60-watt motor operates normally.
What happens when two 120-volt incandescent light bulbs, one 60 watts and
the other 4 watts, are wired in series?
ANSWER: Both bulbs light.
What happens if three 12.5-ohm defrost heaters are wired in series to a 115-
volt supply and they need to provide a 360-watt load?
ANSWER: The heaters operate normally.
How many watts will be used by three 15-ohm resistors wired in parallel to a
120-volt power supply?
ANSWER: 2880 watts.
What is the maximum allowable supply voltage variation?
ANSWER: 15%.
What are capacitors rated in?
ANSWER: Microfarads and volts.
When testing a capacitor with an ohmmeter, what should the meter do?
ANSWER: The needle should move toward zero and then return to infinity.
What is the output side of a transformer called?
ANSWER: The secondary side.
How many watts are in one horsepower?
ANSWER: 746 watts.
How much resistance is required in a 110-volt circuit to limit current to 2
amps?
With Verified Solutions (GRADED A+)
What is current flow in a circuit?
ANSWER: The movement of electrons through a circuit.
What does impedance refer to?
ANSWER: The resistance to the flow of alternating current.
What happens with like charges?
ANSWER: They repel each other.
What is a conductor?
ANSWER: A material that easily releases electrons.
What is the symbol used for current?
ANSWER: "I".
What are the effects of electricity?
ANSWER: It can produce heat, light, and magnetism.
Which material is most suited to be used as a semiconductor?
ANSWER: Silicon.
What is the typical color for a safety ground conductor?
ANSWER: Green.
What type of charge does an electron have?
ANSWER: Negative charge.
What does resistance oppose?
ANSWER: The flow of current.
How many watts are used by a heater operating at 460 volts and drawing 5
amps?
ANSWER: 2300 watts.
Which meter uses its own battery?
ANSWER: Ohmmeter.
, In electrical wiring, what does a black colored wire typically indicate?
ANSWER: It indicates the hot conductor.
How are fuses sized?
ANSWER: By volts and watts.
What happens when two 120-volt motors are wired in series, with one being
60 watts and the other 4 watts?
ANSWER: Only the 60-watt motor operates normally.
What happens when two 120-volt incandescent light bulbs, one 60 watts and
the other 4 watts, are wired in series?
ANSWER: Both bulbs light.
What happens if three 12.5-ohm defrost heaters are wired in series to a 115-
volt supply and they need to provide a 360-watt load?
ANSWER: The heaters operate normally.
How many watts will be used by three 15-ohm resistors wired in parallel to a
120-volt power supply?
ANSWER: 2880 watts.
What is the maximum allowable supply voltage variation?
ANSWER: 15%.
What are capacitors rated in?
ANSWER: Microfarads and volts.
When testing a capacitor with an ohmmeter, what should the meter do?
ANSWER: The needle should move toward zero and then return to infinity.
What is the output side of a transformer called?
ANSWER: The secondary side.
How many watts are in one horsepower?
ANSWER: 746 watts.
How much resistance is required in a 110-volt circuit to limit current to 2
amps?
