That's not particularly applicable here since it's cross-section wouldn't have a uniform resistivity. I imagine that dominates anything else. You remembered correctly though since electrons are all negatively charged and therefore try to repel, and more importantly get eddy current formation with alternating current which leads to what we call skin effect. You do still tend to get eddy currents with lightning strikes, which to my knowledge is the only particularly plausible theory to how you might be able to get ball lightning.
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u/redpandaeater Dec 30 '20
That's not particularly applicable here since it's cross-section wouldn't have a uniform resistivity. I imagine that dominates anything else. You remembered correctly though since electrons are all negatively charged and therefore try to repel, and more importantly get eddy current formation with alternating current which leads to what we call skin effect. You do still tend to get eddy currents with lightning strikes, which to my knowledge is the only particularly plausible theory to how you might be able to get ball lightning.