galvanometer
/ˌɡælvəˈnɑmɪtər/
noun
- An instrument used to detect and measure small electric currents.
- The scientist used a galvanometer to check if the circuit had any current flowing through it.
- In the physics lab, students learned how to read the needle on a galvanometer.
- The old galvanometer in the museum still worked and showed a tiny electric charge.