The incandescent test lamp is used to check for the presence of A. AC current. B. DC voltage. C. DC current.
Computers and Technology · High School · Sun Jan 24 2021
Answered on
The incandescent test lamp can be used to check for the presence of both A. AC current and B. DC voltage. It is a simple device that has a light bulb with two wires coming out of it. When these wires are connected to a circuit, the filament inside the bulb will glow if there is current flowing or voltage present across the contacts. The test lamp doesn't inherently distinguish between AC or DC. It simply indicates if there is electrical energy present. However, the brightness of the glow might vary with AC versus DC, or at different voltages.