Physical law made use in flow meter is:-: (A) Henrys law, (B) Grahams law, (C) Daltons law, (D) Faraday'slaw
Answer is D. Velocity Flow Meters. Magnetic flow meters operate on Faraday'slaw of electromagnetic induction that states that a voltage is induced when a conductor moves through a magnetic field. The liquid serves as the conductor and the magnetic field is created by energized coils outside the flowtube.