Question

The torque in induction watt meters is due to​

Answer 1

Answer:

eddy current.

Explanation:

The torque in the induction watt meter occurs due to the eddy current which occurs in the disc of the watt-meter.

We know that due to the Faraday's law of electromagnetic induction there is an electrical current which gets induced in the coils of the conductor due to the change in the magnetic flux inside these coils. The eddy current occurs in these closed loops of the coils in the conductor which lies in the planes which are perpendicular to the magnetic fields.