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akash10071993Best ResponseYou've already chosen the best response.0
how the small gap causes the 30000v/cm...can you explain it??why this voltage occurs..plz elaborate
 one year ago

saliniBest ResponseYou've already chosen the best response.1
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)
 one year ago
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