An ammeter measures which quantity?

An ammeter measures which quantity?

• A. Voltage
• B. Current
• C. Resistance
• D. Power

Answer: (B)

An ammeter measures the flow of electric charge, called current, through a circuit. It reads how much charge passes a point per second, in amperes, and is placed in series so every part of the circuit carries the same current. The ammeter is designed with very low resistance to avoid altering the circuit’s voltage, unlike a voltmeter which measures voltage and is connected in parallel with high resistance, an ohmmeter which measures resistance, or a wattmeter which measures power.

An ammeter measures the flow of electric charge, called current, through a circuit. It reads how much charge passes a point per second, in amperes, and is placed in series so every part of the circuit carries the same current. The ammeter is designed with very low resistance to avoid altering the circuit’s voltage, unlike a voltmeter which measures voltage and is connected in parallel with high resistance, an ohmmeter which measures resistance, or a wattmeter which measures power.