Physics · Effects of Electric Current
When a table fan is operated for a long time, its motor box becomes hot. This phenomenon is primarily due to the:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1friction between the fan blades and the ambient air.
- 2magnetic repulsion inside the fan armature.
- 3heating effect of electric current (Joule heating).✓
- 4lack of proper ventilation inside the motor casing.
Correct answer
heating effect of electric current (Joule heating).
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