7. Which of the following statements is false?
A. The strength of the electromagnet depends on the size of the electric
current and the number of times the coil is wrapped around the nail.
B. Certain objects push or pull on things because they are magnetic.
C. Electric motors use magnets to turn electricity into motion.
D. A magnet cannot be used to convert an unmagnetized piece of
magnetic material such as an iron nail, into a magnet.
B