Explain the application of eddy currents

Explain the application of eddy currents. (03marks)

• Damping a ‘galvanometer. In the galvanometer the coil is wound on a metal former. Eddy currents in the metal slow down the turning of the coil towards its eventual position, and also suppress its swings about that position; in the end the coil comes to rest sooner than if  it were not damped.
• Cause overheating in dynamos and motors damaging the insulation of windings.
• Speedometer
• Electric brakes

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