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Electric Current and its Effects — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceElectric Current and its Effects1 Mark
MCQ
A fuse is used in an electrical appliance:
  • A
    To earth the appliance.
  • ✓
    To protect the appliance and its cable.
  • C
    To change the efficiency of the applicance.
  • D
    To change the current rating of the applicance.
✓

Answer

Correct option: B.
To protect the appliance and its cable.
Fuse is a device used to prevent overheating of appliances due to a sudden increase in the current in the circuit.
It protects the device and the user.
When the electric current is higher than the normal current needed by a circuit, the fuse blows up and breaks the circuit.
Hence, it protects the circuit from a power overload.

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