What is a precision shunt used for measuring?

A precision shunt is specifically designed to measure electric current. It functions by providing a known and very low resistance within an electrical circuit. When current flows through the shunt, a small voltage drop occurs across it, which can be measured. Ohm's Law (V=IR) allows for this small voltage to be converted into a current reading since the resistance value is known. Because of its design, a precision shunt is capable of accurately measuring large currents while producing a minimal voltage drop, making it an effective tool in various electrical applications, especially in scenarios where precision is critical.

In contrast, devices or methods used for measuring voltage, resistance, or frequency employ different principles that do not involve a shunt's low-resistance current handling capability.