Request an appointment. Familial adenomatous polyposis (FAP) is a rare, inherited condition that causes extra tissue (polyps) to form in your large intestine (colon) and rectum. Polyps can also occur in the upper gastrointestinal tract, especially the upper part of your small intestine (duodenum).
An iron core will produce the strongest magnet. By increasing the size of the core you also increase the strength of the electromagnet. Compare the diagrams. Note: Look at the amount of coils, the size and number of the power source.
Electromagnets create a magnetic field when an electric current is run through a coil of wire wrapped around an iron core. There are several factors affecting the strength of magnetic fields and several ways of determining the strength of those fields, both are described in the article below.