Podcast
Questions and Answers
Resistance is measured in units of __________.
Resistance is measured in units of __________.
Ohms
An ohmmeter must never be used on a circuit that may be __________.
An ohmmeter must never be used on a circuit that may be __________.
Energized with a voltage
A(n) __________ tester is used to check for a break in a wire.
A(n) __________ tester is used to check for a break in a wire.
Continuity
Which of the following statements is true regarding the relationship between resistance and current?
Which of the following statements is true regarding the relationship between resistance and current?
To find the total resistance in a series circuit, __________.
To find the total resistance in a series circuit, __________.
A(n) __________ is used to measure resistance.
A(n) __________ is used to measure resistance.
If a wire measured with a multimeter has continuity, it __________.
If a wire measured with a multimeter has continuity, it __________.
The best piece of test equipment for tracing wire is the __________.
The best piece of test equipment for tracing wire is the __________.
Check __________ with an ohmmeter.
Check __________ with an ohmmeter.
Which is not an application of Ohm's Law?
Which is not an application of Ohm's Law?
Which of the following statements does not accurately describe a part of the process of measuring the resistance of a component that is connected in a circuit?
Which of the following statements does not accurately describe a part of the process of measuring the resistance of a component that is connected in a circuit?
Where there is no continuity found when testing with a DMM, the screen may display this.
Where there is no continuity found when testing with a DMM, the screen may display this.
The flow of electrons stops when the circuit is __________.
The flow of electrons stops when the circuit is __________.
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Study Notes
Electrical Resistance Measurement
- Resistance is quantified in ohms (Ω).
- An ohmmeter is unsuitable for use on circuits that are energized with voltage.
- Continuity testers are employed to identify breaks within wires.
- There’s an inverse relationship between resistance and current: higher resistance results in lower current flow.
- To determine total resistance in a series circuit, sum the individual resistances of each component.
- An ohmmeter is specifically designed for measuring resistance.
- A wire exhibiting continuity with a multimeter indicates it can conduct current effectively.
- The most effective tool for tracing wires is the ohmmeter.
- An ohmmeter is utilized to check for resistance in circuits.
- Applications of Ohm's Law do not include troubleshooting circuits, sizing components, or creating multiple voltage levels.
- When measuring resistance in an active circuit, the power supply should be turned off, contrary to a common misconception.
- A digital multimeter (DMM) may show 'OL' when continuity testing reveals no connection.
- Current flow ceases when a circuit is opened, interrupting the pathway for electrons.
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