Which device is used to measure current?

Which device is used to measure current?

• A. An ammeter
• B. A voltmeter
• C. A resistor
• D. A capacitor

Answer: (A)

The device used to measure current is an ammeter. Ammeters are specifically designed for this purpose and are connected in series in a circuit to measure the flow of electric current. They typically have a very low internal resistance, allowing them to efficiently measure current without significantly affecting the current flow in the circuit. In contrast, a voltmeter measures voltage and is connected in parallel across a component in a circuit. A resistor is a component used to limit or control the flow of current, and it does not measure current itself. A capacitor, on the other hand, stores electrical energy and is not used for measuring current either. Thus, the ammeter is clearly identified as the correct device for measuring current in electrical circuits.

The device used to measure current is an ammeter. Ammeters are specifically designed for this purpose and are connected in series in a circuit to measure the flow of electric current. They typically have a very low internal resistance, allowing them to efficiently measure current without significantly affecting the current flow in the circuit.

In contrast, a voltmeter measures voltage and is connected in parallel across a component in a circuit. A resistor is a component used to limit or control the flow of current, and it does not measure current itself. A capacitor, on the other hand, stores electrical energy and is not used for measuring current either. Thus, the ammeter is clearly identified as the correct device for measuring current in electrical circuits.