Question 547Electricity & Electronics - Assistant Engineer

The correct answer is B) the selector switch is selected for continuity/diode test and the secondary function push button is toggled for continuity. The symbol "1" illuminated on the digital multimeter screen indicates that the meter is in the continuity test mode. In this mode, the multimeter checks for the presence of a complete electrical circuit by detecting low resistance, typically below 50 ohms. This is the secondary function of the meter, which is accessed by toggling the secondary function push button. The other answer choices are incorrect because they do not accurately describe the meaning of the "1" symbol in the context of a continuity test. The meter is not subjected to an unsafe voltage, the test leads are not in the wrong terminals, and the meter is not detecting a wireless signal.