Which of the following devices relies on the heating effect of electric current?

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An electric iron contains a heating element (usually nichrome). When electric current passes through this high-resistance element, it produces heat according to Joule's law (H = I²Rt). An electric fan uses the magnetic effect (motor), a generator uses electromagnetic induction, and a transformer uses mutual induction.

Which of the following devices relies on the heating effect of electric current? MCQ with Answer and Explanation

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