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What is History and Function of Wattmeters about?

The traditional analog wattmeter is an electrodynamic instrument that measures power in a circuit. It consists of fixed current coils and a movable potential coil. The current coils are connected in series with the circuit while the potential coil is connected in parallel. A current flowing through the current coils generates a magnetic field proportional to the line current. The potential coil detects this field, and its deflection indicates the power being used according to the equation P=VI. Modern elect

Author

Jeeva Josy

Language

EN