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.
So when the movement from the coil and the electricity flowing from. the power packs creates magnetism in the iron core. Main Factors. The main factors in my investigation are the voltage, the iron nail. and the number of coils. The voltage, iron nail and the wire must be. kept constant to ensure a fair test. I will be varying the number of. coils that will be wrapped around the iron core.