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.
Magnetic Field Strength for Electromagnets. 1  Where: 2  H â is the strength of the magnetic field in ampere-turns/metre, At/m. 3  N â is the number of turns of the coil.  I â is the current flowing through the coil in amps, 1  A. L â is the length of the coil in metres,  m.