Yes, a **galvanometer** is used to **detect** the presence of electric **current** in a circuit. It is a very sensitive instrument that can detect small currents by showing a deflection in its needle when current flows through it. However, it is not used to measure large currents directly, as it is primarily designed for detection and small measurements.
For measuring larger currents, a **galvanometer** can be converted into an **ammeter** by connecting a **shunt resistor** in parallel with it.