electrometer
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Electric charges can be detected by observing their effects on nearby objects, such as causing attraction or repulsion between charged objects. They can also be detected using instruments like an electroscope, which can detect the presence of electric charge by measuring the deflection of a charged object. Additionally, electric charges can produce electric fields that can be detected using specialized equipment like a Gauss meter.
A stationary electric charge is called an electric static charge.
An instrument that can detect the presence of an electric charge is an electroscope. It typically consists of a metal rod with a lightweight metal or foil leaves attached, allowing them to move in response to the presence of electric charge. By observing the movement of the leaves, one can determine the presence and type of charge.
Electric charge flowing in a steady stream is called electric current. It is the rate of flow of electric charge and is measured in Amperes (A).
The positive elementary electric charge is called a proton.