An electromagnet can be made by wrapping insulated wire around an iron nail and connecting the ends of the?

wire to a 6-volt battery.


* The hypothesis i came up with was that by increasing the # of wire wrapped around the nail increases the strength of the electromagnet, as measured by the # of paper clips the magnet can pick up.*


~Can someone please identify the independent and dependent variables of this experiment?~


Thank you.An electromagnet can be made by wrapping insulated wire around an iron nail and connecting the ends of the?
independent: voltage, length of wire, number of coils


dependent: magnetic effect (paper clips)