Res Furn Flashcards
What term is used to describe electrical pressure?
Voltage
What unit is used to describe the resistance of a circuit?
Ohm’s
If you are unsure of the voltage in a circuit, what range should you select for the meter?
A range higher than you expect
How is an ammeter connected to a circuit when measuring current?
In series with the circuit to be tested
Which test would be conducted with the circuit de-energized?
Ohm’s
When a clip-on ammeter is used, how many wires should the ammeter be clipped around to attain the correct reading?
One
How is the voltmeter connected to a circuit to attain the correct voltage?
In parallel with the power on
What type of meter is used to determine electron flow or current?
Ammeter
What is the purpose of a continuity test?
To determine whether there’s a continuous circuit
When using Ohm’s law, what does “E over R” represent?
Amperage
When a clip-on ammeter is used, what should be done when the amperage is too low to obtain a reading?
Use a 10-wrap multiplier and divide the reading by 10
Which meter is never connected to an energized circuit?
Ohmmeter
What does it mean when a digital meter flashes the display?
The value has exceeded the meter setting
When determining the voltage of a DC circuit, where does the red meter lead connect?
To the positive polarity of the circuit
When taking the resistance of a component, why is it necessary to isolate the component from the circuit?
To ensure that there is no other current pathway
The voltage of a circuit is 24 volts and resistance is 150 ohms. Using Ohm’s law, what is the expected amperage?
0.16 amps
A circuit has 120 volts and 15 amps of current. Using Ohm’s law, what is the resistance of the circuit?
8 ohms
What test is conducted when a meter is connected to the circuit in series with the power on?
Amperage
An ammeter is connected to a circuit, but the circuit’s fuse keeps burning out. What is the problem?
The meter is connected to the load in parallel.
A voltmeter is correctly connected to a circuit, but the needle deflects below zero. What corrective action will you take?
Reverse the meter leads.
