PHYA22H3 Chapter 33: PHYA22 Chapter 33.doc

• School: UTSC
• Department: Physics and Astrophysics
• Course: PHYA22H3
• Professor: Brian Wilson

Document Summary

Magnetism: magnetism is not the same as electricity, magnetism is a long-range force, magnets have two poles, the north and the south poles. The geographic north pole is actually a south magnetic pole and is offset slightly from the geographic poles of the earth"s rotation axis. It has both a magnitude (b) and: magnetic field exerts forces on magnetic poles. The force on a north a direction. pole is parallel to b and the force on the south pole is opposite b. The si unit of magnetic field strength is tesla (t) and 1 t = 1 n/am. I = d q/d t: bcurrent segment: (m 0/4p )(id s x r^/r2), magnetic field of a very short segment of current. Identify the point p at which you want to calculate the magnetic field: draw a picture and establish a coordinate system. o, divide the current-carrying wire into segments for which you already know how to determine b.