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Electric Current and its Effects — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceElectric Current and its Effects1 Mark
MCQ
What will happen if the strip in a doorbell loses its flexibility$?$
  • A
    Striker may break if current is large.
  • B
    After hitting the metal gong, it never returns to original position and only a single sound is produced.
  • C
    System of doorbell breaks.
  • ✓
    Both $A$ and $B.$
✓

Answer

Correct option: D.
Both $A$ and $B.$

 Because of lack of flexibility, striker will resist change of motion more and may break if current is large.
Without flexibility, no rebounding force is present and striker will not return to its original position.

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