Question: how do I fix the wire on the penny ?
Option 0: Put the penny on a non-conducting surface like a silicon mat, then heat the penny with an iron solder until solder starts to melt on the penny, then put the in the melted solder.
Option 1: Put the penny on a non-conducting surface like a silicon mat, then heat the penny with a hair dryer until solder starts to melt on the penny, then put the in the melted solder.
Answer: 0