Oh, ok, thankyou for clarifying. Regarding the Birkeland current, I was reading Wikipedia, while wondering if natural systems could be used to launch satellites. Hence my question around Birkeland currents.
I was reading about the tail of Venus and mistakenly assumed that that was a Birkeland current. I guess a more correct question would be ‘What would happen if the tail of Venus collided with Earth’s Birkeland current?’