anonymous
  • anonymous
WHY ELECTRIC SPARK OCCURS IN SWITCH BOARDS???
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
how the small gap causes the 30000v/cm...can you explain it??why this voltage occurs..plz elaborate
anonymous
  • anonymous
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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