A. ammeter
B. electrometer
C. galvanometer
D. spectrometer
✅ The correct answer is option A.
The instrument used to measure electric current is ammeter. Ammeter, instrument for measuring either direct or alternating electric current, in amperes. An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.
The instrument used to measure electric current is ammeter. Ammeter, instrument for measuring either direct or alternating electric current, in amperes. An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.