Wrapping the copper wire around an iron nail, increasing the current.   Increase the power going through the wire or have more wire wrapped around the metal object. So in â¦ the case of a nail with wire wrapped around it, the more wraps you do the stronger the electromagnet will be.
Porcupines are a type of rodent found in two main regions of the world, so scientists group them into either Old World or New World porcupines.
Porcupine Description. The color of a Porcupine is to help them stay well camouflaged in their habitat. That is why some of them are gray and others are brown. There are some that have white on them as well. They have a large body that is round and they move at a very slow pace.