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  3. 7th Class
  4. Science
  5. Electric Current and Its Effects

7th Class Science Electric Current and Its Effects Question Bank Electric Current and Its Effects

  • question_answer
    The fault clearing time of a circuit breaker is usually

    A) Few minutes

    B) Few seconds

    C) One second

    D) Few cycles of supply voltage

    Correct Answer: D

    Solution :

    Few cycles of supply voltage


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