Which unit measures electrical current?

Which unit measures electrical current?

• A. Amps
• B. Volts
• C. Ohms
• D. Watts

Answer: (A)

Current is the flow of electric charge through a conductor, and the unit that measures that rate is the ampere (A). One ampere means one coulomb of charge passes a point every second. So when a device carries a certain number of amperes, that’s how much charge is moving per second. The other options measure related but different things: volts measure electric potential difference (the push that drives current), ohms measure resistance (how much a material resists the flow), and watts measure power (the product of voltage and current). Since the question asks for the unit that measures current, amps is the correct unit.

Current is the flow of electric charge through a conductor, and the unit that measures that rate is the ampere (A). One ampere means one coulomb of charge passes a point every second. So when a device carries a certain number of amperes, that’s how much charge is moving per second. The other options measure related but different things: volts measure electric potential difference (the push that drives current), ohms measure resistance (how much a material resists the flow), and watts measure power (the product of voltage and current). Since the question asks for the unit that measures current, amps is the correct unit.