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his does not change the 6 amps that we are working with because this current is limited by the lamp resistance.I used the same assumption in my calculations just because the difference is not significant. But technically we should take the reciprocal of the sum of the reciprocals of the two parallel resistances then add in the lamp resistance and the first half of the conductor resistance to figure the total resistance, and figure the current from that. Anyway, you used the parallel resistance formula to get Rt, and that is what matters.
I don't mind rounding at all. In fact I think we both were using too many significant digits.
Now about Bill question on human resistance, I have not seen a published number even quote as low as 1000 ohms.
I have measured myself on a 50 V battery operated ohmmeter with the ohms X 100000 range. I don't recall the readings. But they were quite variable, like 5000 to 30000 or something like that.
I suspect that the resistance from head to toe is different from that from thumb to index finger tip. Cuts or wet wounds definitely have lower resistance when contacted.
Smear a little crazy glue over your finger tip rubbing it rapidly like ointment until it dries and you can literally stick your finger in a light socket. I wonder if Scott knew about that trick for invisible insulation.