Asked by Karim Moukrem on May 06, 2024
Verified
Technician A says to measure resistance of a component or circuit, the power must be removed first.Technician B says when measuring resistance, the meter applies a very small voltage to the component or circuit and measures the voltage drop.Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B
Resistance
The opposition to the flow of electric current, measured in Ohms, which affects how much current flows through a circuit.
Voltage Drop
The reduction in electrical potential along the path of a current flowing through an electrical circuit, influenced by the circuit's resistance.
Circuit
A closed loop or pathway that allows the flow of electricity, comprising elements like conductors, resistors, and power sources.
- Understand basic electrical measurements and safety precautions.
- Explain the various methods to measure electrical properties such as resistance, current flow, and voltage.
Verified Answer
SS
shayla springsMay 10, 2024
Final Answer :
C
Explanation :
Both Technician A and Technician B are correct. Technician A is correct because to accurately measure resistance, the component or circuit must not be powered, to prevent any current flowing through it from affecting the measurement. Technician B is correct because a multimeter, when set to measure resistance, applies a small voltage to determine the resistance based on the voltage drop across the component or circuit.
Learning Objectives
- Understand basic electrical measurements and safety precautions.
- Explain the various methods to measure electrical properties such as resistance, current flow, and voltage.