The flow of electrons in a circuit is measured by which instrument?

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Multiple Choice

The flow of electrons in a circuit is measured by which instrument?

Explanation:
Measuring the flow of electrons means measuring electric current. An ammeter is the instrument designed for this purpose. It’s connected in series with the circuit so that all the current in that branch flows through it, and it’s built to have very low internal resistance to avoid significantly altering the circuit’s behavior. In contrast, a voltmeter is connected in parallel to measure voltage (potential difference) across a component, an ohmmeter measures resistance by applying a test current and reading the resulting voltage, and a wattmeter measures power (voltage times current). So for the actual flow of electrons, the ammeter is the right choice.

Measuring the flow of electrons means measuring electric current. An ammeter is the instrument designed for this purpose. It’s connected in series with the circuit so that all the current in that branch flows through it, and it’s built to have very low internal resistance to avoid significantly altering the circuit’s behavior.

In contrast, a voltmeter is connected in parallel to measure voltage (potential difference) across a component, an ohmmeter measures resistance by applying a test current and reading the resulting voltage, and a wattmeter measures power (voltage times current). So for the actual flow of electrons, the ammeter is the right choice.

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