What is current and pressure coils?

Current and pressure coils are components used in electrical measurement instruments. A current coil is designed to measure the flow of electric current, typically in ammeters and wattmeters, by producing a magnetic field proportional to the current. Pressure coils, on the other hand, are used to measure voltage or pressure in devices like voltmeters, generating a magnetic field proportional to the voltage applied. Together, they enable accurate measurement and monitoring of electrical parameters in various applications.