1.

In which of the following devices, the eddy current effect is not used? (1) Induction furnace (2) Magnetic braking in train (3) Electromagnet (4) Electric heater

Answer»

According to NTA official Answer key The answer will be

(3) Electromagnet 

(4) Electric heater

The correct option is (4) Electric heater.

Explanation:

Electric heater does not involve Eddy currents. It uses Joule's heating effect.



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