What is the rate of transfer of energy through a circuit that can be measured with an ammeter?

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Multiple Choice

What is the rate of transfer of energy through a circuit that can be measured with an ammeter?

Explanation:
An ammeter directly measures current—the rate at which electric charges flow through a conductor. This quantity is what the instrument is designed to gauge, which is why it’s placed in series to track how much charge passes per second. The rate at which energy is transferred in a circuit, called power, depends on both current and voltage (P = VI, or P = I^2R). So you can compute energy transfer if you know the voltage (or resistance) in addition to the current, but the ammeter itself gives you the current, not the energy transfer rate.

An ammeter directly measures current—the rate at which electric charges flow through a conductor. This quantity is what the instrument is designed to gauge, which is why it’s placed in series to track how much charge passes per second. The rate at which energy is transferred in a circuit, called power, depends on both current and voltage (P = VI, or P = I^2R). So you can compute energy transfer if you know the voltage (or resistance) in addition to the current, but the ammeter itself gives you the current, not the energy transfer rate.

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