A spsrk passes though airwhen the potential gradient at the surface of a chaged conductor is 3xx10^(6) VM ^(-1) What must be the radius of a metal sphere (insulated ) which may be raisid to a pottential of 2xx10^(6) voits before spking occurs? How much energy will be bestored just before there ios a spark?

A spsrk passes though airwhen the potential gradient at the surface of

1.	A spsrk passes though airwhen the potential gradient at the surface of a chaged conductor is 3xx10^(6) VM ^(-1) What must be the radius of a metal sphere (insulated ) which may be raisid to a pottential of 2xx10^(6) voits before spking occurs? How much energy will be bestored just before there ios a spark?
Answer» ANSWER :`0.67m ,148.3 J`

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