Ampere is a measure of which of the following?

• A. Electrical resistance
• B. Electrical current or power
• C. Capacitance
• D. Frequency

Answer: (B)

Ampere measures electrical current, the rate at which electric charge flows. An ampere is defined as one coulomb of charge moving past a point each second. Because this question is asking what amperes measure, the direct takeaway is current. Power relates to current via P = V × I, so current and power are linked, but amperes themselves quantify current, not power. The other options describe resistance (ohms), capacitance (farads), and frequency (hertz). Thus the best fit is the choice that references electrical current.