Look at the diagram below. True or false? If Safira wants to measure the voltage across these resistors, she can replace the ammeter with a voltmeter.

Understanding the Concept

1. True or False: To determine whether Safira can replace the ammeter with a voltmeter, we need to understand the functions of both instruments in a circuit.

2. Function of an Ammeter: An ammeter is designed to measure the current flowing through a circuit. It is connected in series with the circuit components.

3. Function of a Voltmeter: A voltmeter measures the voltage across two points in a circuit. It is connected in parallel with the components whose voltage is being measured.

Analysis

4. Connection Types: If the ammeter is measuring current in series, replacing it with a voltmeter—which needs to be connected in parallel—will not yield the correct measurement. This is because connecting a voltmeter in series would lead to an incorrect and potentially damaging condition, as voltmeters usually have high resistance to avoid drawing significant current.

5. Consequences of Replacement: If Safira were to replace the ammeter with a voltmeter, it would disrupt the flow of current and not provide a reading of the voltage across the resistors.

Conclusion

6. Verdict: Therefore, the statement is False. Safira cannot replace the ammeter with a voltmeter because they serve different purposes and must be connected differently in a circuit.

Final Answer

False. Safira cannot measure the voltage across the resistors by replacing the ammeter with a voltmeter.