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Electric Current and its Effects — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceElectric Current and its Effects1 Mark
MCQ
Exposed Electric doorbell can be damaged by:
  • A
    Mechanical damage
  • B
    High Electric currents
  • C
    Humidity
  • ✓
    All of the above
✓

Answer

Correct option: D.
All of the above
  1. Mechanical Damage to metal gong or striker may hinder the working of the bell.
  2. High electric currents may cause heating and burning of an electrical circuit.
  3. Humidity may cause a short circuit between two unconnected wires, causing high electric currents and damage.

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