it is a positive charge because the gas atoms/molecules have been ionized which means 1 or more electrons have been ejected because of the high quanta of energy
it is a positive charge because the gas atoms/molecules have been ionized which means 1 or more electrons have been ejected because of the high quanta of energy
where have all the electrons gone? away to another dimension to organize a negative ions tea party? due to the law of conservation of charge, the net charge of a generated plasma out of oxygen/nitrogen/hydrogen/helium/... has to be zero.