Q: The instrument used for detecting the presence of electric current in a circuit is
(a)Refractometer
(b)Galvanometer
(c)Viscometer
(d)Diffractometer
Correct Answer: (c)
The correct answer is (c): Viscometer. Subject: Science & Technology | Sub-topic: Physics Note: This answer was determined through AI-based research. Verify against the official answer key when available.