What instrument measures electrical current?

What instrument measures electrical current?

• A. Voltmeter
• B. Ammeter
• C. Ohmmeter
• D. Power meter

Answer: (B)

An ammeter is specifically designed to measure electrical current, which is the flow of electric charge through a circuit. It operates by being connected in series with the circuit, allowing the current passing through it to be directly measured. The reading on the ammeter indicates how much electric charge is flowing per unit of time, often represented in amperes (A). In contrast, a voltmeter is used to measure voltage, or the electrical potential difference between two points in a circuit. An ohmmeter is utilized to measure resistance in ohms, indicating how much a component resists the flow of electric current. A power meter measures the amount of electric power consumed by a device or circuit, typically expressed in watts. Each of these instruments serves a unique purpose, but when it comes to measuring current specifically, the ammeter is the correct instrument.

An ammeter is specifically designed to measure electrical current, which is the flow of electric charge through a circuit. It operates by being connected in series with the circuit, allowing the current passing through it to be directly measured. The reading on the ammeter indicates how much electric charge is flowing per unit of time, often represented in amperes (A).

In contrast, a voltmeter is used to measure voltage, or the electrical potential difference between two points in a circuit. An ohmmeter is utilized to measure resistance in ohms, indicating how much a component resists the flow of electric current. A power meter measures the amount of electric power consumed by a device or circuit, typically expressed in watts. Each of these instruments serves a unique purpose, but when it comes to measuring current specifically, the ammeter is the correct instrument.