Cathodic Protection Tester Practice Exam

The measurement of current in a cathodic protection system is typically done using which device?

1. Voltmeter

2. Ammeter

3. Capacitor

4. Resistor

The correct answer is: Ammeter

The measurement of current in a cathodic protection system is typically done using an ammeter because it is specifically designed for measuring the flow of electric current in a circuit. In cathodic protection systems, understanding the amount of current flowing is crucial to assess the effectiveness of the protection being provided to the metal structures. This ensures that the system is functioning appropriately to minimize corrosion by supplying sufficient current to the protected surface. While voltmeters are used for measuring voltage in a system, they do not provide a direct measurement of current. Capacitors are components that store electrical energy and are not used for measuring current. Resistors are passive components used to limit current in a circuit, but they also do not measure current directly. Therefore, the ammeter is the appropriate device for obtaining the necessary current measurements in a cathodic protection system.