Voltage 2. Current 3. Resistance 4. Inductance Correct Answer: Option 2- Current Explanation: An ammeter, short for Ampere meter, is a device used for measuring electric current in a circuit. The unit of electric current is expressed in amperes (A), which is why it’s called an ammeter. An ammeter measures both alternating and direct current. To measure the current, the ammeter is connected in series with the circuit whose current is to be measured. The ammeter has a low internal resistance, causing a minimal voltage drop.