When signaling a VOM to measure resistance, what should you do?

When measuring resistance with a Volt-Ohm Meter (VOM), it is essential to ensure that the circuit is not energized. This is crucial because measuring resistance while the circuit is powered can give inaccurate readings and can potentially damage the meter.

Therefore, the correct approach involves disconnecting the circuit to avoid any current flow. This allows you to accurately measure the resistance of the component or circuit without interference from other voltages or current paths. After establishing that there is no power in the circuit, the VOM is typically connected in such a way that it can measure the resistance appropriately.

The idea is to connect the meter leads to the component or portion of the circuit you're testing while the circuit is disconnected. This gives a true measurement of resistance without any complications from the circuit's operation.

When properly connected, the VOM applies a small voltage to the resistance being measured and calculates the ohmic value based on the resulting current flow. This method is reliable and commonly used in practical applications for testing and troubleshooting electrical circuits.