The potential difference of an electrochemical cell is measured by:
Correct answer: B. Voltmeter
- A. Ammeter
- B. Voltmeter
- C. Galvanometer
- D. Calorimeter
Explanation
A voltmeter is an instrument used for measuring the electric potential difference between two points in an electric circuit. An ammeter (from an ampere meter) is a measuring instrument used to measure the current in a circuit. A galvanometer is an electromechanical instrument used for detecting and indicating an electric current. A calorimeter is an object used for calorimetry or the process of measuring the heat of chemical reactions or physical changes as well as heat capacity.
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