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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 |
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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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