Short Notes: Measurement of Resistance | Short Notes for Electrical Engineering - Electrical Engineering (EE) PDF Download

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FAQs on Short Notes: Measurement of Resistance - Short Notes for Electrical Engineering - Electrical Engineering (EE)

1. How is resistance measured in electrical engineering?
Ans. Resistance in electrical engineering is typically measured using a device called a multimeter. The multimeter is set to the resistance measurement mode, and the probes are connected to the two points across which the resistance needs to be measured.
2. What are the common units used to measure resistance?
Ans. The common units used to measure resistance are ohms (Ω), kiloohms (kΩ), and megaohms (MΩ). These units represent the amount of opposition a material has to the flow of electric current.
3. How does temperature affect the measurement of resistance?
Ans. Temperature can significantly impact the measurement of resistance. Most materials experience a change in resistance with temperature, either increasing (positive temperature coefficient) or decreasing (negative temperature coefficient). It is important to consider temperature compensation when measuring resistance in varying temperature conditions.
4. Can resistance be measured in a circuit with components connected?
Ans. Yes, resistance can be measured in a circuit with components connected. To measure the resistance of a specific component in a circuit, the component needs to be isolated from the rest of the circuit, and the resistance can then be measured using a multimeter.
5. Why is it important to measure resistance accurately in electrical engineering?
Ans. Measuring resistance accurately is crucial in electrical engineering as it helps in troubleshooting faulty components, determining the power dissipation in a circuit, calculating voltage drops, and ensuring the proper functioning of electronic devices. Incorrect resistance measurements can lead to improper circuit operation and potential damage to components.
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