Sparking occur when a load is switched off because the
circuit has high
a.) Inductance b.) Capacitance c.) Resistance
d.) None
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Answer Posted / sanjay yadav
Well I think the reason of sparking is high resistance in load circuit .forexample:we can practically see in our home that when we connect or disconnect a 2000kw electric heater to electric circuit,a large numbers of sparking occurs because flow of current (electrons )depend upon resistance. When we connect or disconnect a high resistive load,some current electrons misguide and they jump into air and strike to air electrons,and its result is sparking occurs. Inductance is a not a reason for sparking because when we connect a 25kva 3 phase transformer without load on line there is no sparking occurs on terminal,this is my personal experience.
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