Question

The incandescent test lamp is used to check for the presence of A. AC current. B. DC voltage. C. DC current.

Answer 1

Incandescent test lamps are used to check for Alternating Current Voltage and Direct Current Voltage. 

The answer is AC Voltage and DC Voltage. 

Answer 2

Answer:

B. DC voltage

Explanation:

The “test lamp”, is basically just a bare 12V lamp and two wires. If you connect the two wires, to the two poles of the battery, the lamp will become incandescent, light. This indicates that the lamp and the wires completed the circuit where there is 12V, the current will circulate through the wires to the lamp, the current will go through the lamp filament, it will heat, light will be produced. So, whenever you touch two electric points where there is around 12V, the lamp will lite. That is the function of the test light.