Figure 3 shows a nail on which a wire is to be wound to make an electromagnet. By drawing, show how the wire should be wound around the nail so that end A becomes a north pole and end B a south pole.

Figure 3 shows a nail on which a wire is to be wound to make an electromagnet.

 

By drawing, show how the wire should be wound around the nail so that end A becomes a north pole and end B a south pole.