How to Invent Everything: A Survival Guide for the Stranded Time Traveler

by Ryan North

if there are more coils in your outgoing wire, then the charge induced there will have decreased current and increased voltage, making it ideal for long-distance transmission. If there are fewer, you’ll decrease your voltage and increase your current, making your electricity ready for local use. Voltage is directly proportional to the number of coils,

Interestingly, our current understanding suggests 172 may be an atomic limit: at 173, the atom would be so large that electrons on its outer shell would have to move at speeds faster than light