On which of the following effects of electric current a fuse operates ?
Correct answer: C. Heating effect
- A. Photoelectric effect
- B. Electrostatic effect
- C. Heating effect
- D. Magnetic effect
Explanation
Current produces heat according to the Joule-heating relation, and the fuse element is chosen to melt when this heating exceeds its safe limit. The operating principle is therefore the heating effect of current.
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