Which device measures the flow of current through a circuit?

Which device measures the flow of current through a circuit?

• A. Voltmeter
• B. Multimeter
• C. Ammmeters
• D. Ohmmeter

Answer: (C)

Measuring the flow of electric current in a circuit is done with an ammeter. An ammeter is placed in series with the circuit so all the current passes through it, and it is designed with very low resistance to avoid altering the current you’re trying to measure. That specialization in sensing current makes it the best choice for this task. A voltmeter, by comparison, measures voltage and is connected across a component; an ohmmeter measures resistance when the circuit is not powered; a multimeter can measure current as well, but when you’re specifically measuring current flow, the ammeter is the instrument built for that role.

Measuring the flow of electric current in a circuit is done with an ammeter. An ammeter is placed in series with the circuit so all the current passes through it, and it is designed with very low resistance to avoid altering the current you’re trying to measure. That specialization in sensing current makes it the best choice for this task. A voltmeter, by comparison, measures voltage and is connected across a component; an ohmmeter measures resistance when the circuit is not powered; a multimeter can measure current as well, but when you’re specifically measuring current flow, the ammeter is the instrument built for that role.