Which instrument is used to detect the presence of an electric charge on a body?

💡 Solution & Explanation

A gold-leaf electroscope utilizes thin metallic leaves that diverge when an electrical charge is transferred to them, indicating both the presence and magnitude of static electricity. Devices like galvanometers detect tiny electric currents rather than static charges, whereas voltmeters measure potential differences across circuit components. Understanding electrostatic induction principles helps solve fundamental physics problems in competitive examinations.