Question 166Electricity & Electronics - QMED

The correct answer is C) placing the test leads across a voltage source to measure voltage while in the resistance mode. This is correct because placing the test leads across a voltage source while the multimeter is in resistance mode can potentially damage the multimeter. The resistance mode is designed to measure the resistance of a component or circuit, not the voltage. Applying a voltage source to the resistance mode can send a large current through the multimeter, which can overload and potentially damage the internal components. The other options are not correct because they involve using the multimeter in the appropriate modes (voltmeter and ammeter) to measure voltage and current, which is safe and recommended practice.