Which quantity is measured in amperes?

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Study for the Georgia High School Physical Science Test. Prepare with flashcards and multiple-choice questions, detailed hints and explanations included. Get ready for your exam!

Multiple Choice

Which quantity is measured in amperes?

Explanation:
Current is the rate at which electric charges flow through a conductor, and amperes are the units used to measure that flow. One ampere means that one coulomb of charge passes a given point each second. In circuits, you’d use an ammeter to measure this current by placing it in series with the circuit so it records the actual flow of charge. The other quantities have different units: voltage is measured in volts, resistance in ohms, and power in watts. Ohm’s law links them: current equals voltage divided by resistance, so knowing two of the quantities determines the third. For example, with 5 volts across a 10-ohm resistor, the current is 0.5 amperes.

Current is the rate at which electric charges flow through a conductor, and amperes are the units used to measure that flow. One ampere means that one coulomb of charge passes a given point each second. In circuits, you’d use an ammeter to measure this current by placing it in series with the circuit so it records the actual flow of charge. The other quantities have different units: voltage is measured in volts, resistance in ohms, and power in watts. Ohm’s law links them: current equals voltage divided by resistance, so knowing two of the quantities determines the third. For example, with 5 volts across a 10-ohm resistor, the current is 0.5 amperes.

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