The comparison between Moving Coil & Moving Iron Instruments is given in the table below.
|S.No.||Moving Coil Instruments||Moving Iron Instruments|
|1.||It works on the principle of DC motor.||It works on the principles of magnetism.|
|2.||Deflection torque is proportional to current.||Deflection torque is proportional to the square of the current.|
|3.||Damping is provided by the eddy current.||Damping is provided by air damping.|
|4.||Spring controlled instruments.||Gravity controlled instruments.|
|5.||Controlling torque is proportional to the angle of defection.||Controlling torque is proportional to Sinθ.|
|6.||Uniform Scale||Non-Uniform Scale|
|7.||Delicate, sensitive and accurate.||Robust, reliable, and accurate|
|9.||Low power consumption||high power consumption than moving coil.|
|10.||It is used only in DC Circuits.||It is used both in AC and DC Circuits.|
|11.||Can be used as Voltmeter, Ammeter, Galvanometer, ohmmeter||Can be used as Ammeter, Voltmeter, and Wattmeter.|
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