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akash10071993

  • 3 years ago

WHY ELECTRIC SPARK OCCURS IN SWITCH BOARDS???

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  1. akash10071993
    • 3 years ago
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    how the small gap causes the 30000v/cm...can you explain it??why this voltage occurs..plz elaborate

  2. salini
    • 3 years ago
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    if the switch board is designed to support aN A.C supply then the moment the switch is on,there will be a quick change in magnetic flux which induces an emf(voltage) and spark given by rate of chage in magnetic flux=induced emf(in a direction opposite to change in magnetic flux)

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