Which instrument is used to measure electric current?

Which instrument is used to measure electric current?

• A. Voltmeter
• B. Resistance meter
• C. Ammeter
• D. Signal generator

Answer: (C)

The correct instrument to measure electric current is an ammeter. An ammeter is specifically designed to measure the flow of electric current in a circuit, typically expressed in amperes. It works by being placed in series with the circuit, allowing the current to pass through the meter so that it can measure and display the amount of current flowing. In contrast, a voltmeter measures the voltage across two points in an electrical circuit, not the current itself. A resistance meter, or ohmmeter, is used to measure the resistance of an electrical component and does not provide measurements of current flow. A signal generator, on the other hand, is used to produce electrical signals of varying frequencies and amplitudes, and it does not measure current. Understanding the specific function of each instrument is key to using them correctly in electronic measurements.

The correct instrument to measure electric current is an ammeter. An ammeter is specifically designed to measure the flow of electric current in a circuit, typically expressed in amperes. It works by being placed in series with the circuit, allowing the current to pass through the meter so that it can measure and display the amount of current flowing.

In contrast, a voltmeter measures the voltage across two points in an electrical circuit, not the current itself. A resistance meter, or ohmmeter, is used to measure the resistance of an electrical component and does not provide measurements of current flow. A signal generator, on the other hand, is used to produce electrical signals of varying frequencies and amplitudes, and it does not measure current. Understanding the specific function of each instrument is key to using them correctly in electronic measurements.