Question

explain speedometer on bases of eddy current​

Answer 1

Answer:

As the speedometer cable rotates, it turns the magnet at the same speed. ... The faster the car goes, the faster the cable turns, the quicker the magnet spins, the bigger the eddy currents it generates, the greater the force on the speed cup, and the more it's able to pull the pointer up the dial.

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Answer 2

Answer:

An eddy current speedometer

That means its transmission and driveshaft are rotating at a speed that corresponds to the vehicle speed. It also means that the mandrel in the speedometer's drive cable because it's connected to the transmission via a set of gears is also rotating at the same speed.