PHYS 230 Lecture Notes - Lecture 1: Dot Product, Magnetic Monopole, Current Source
Document Summary
Topics: magnetic fields: creating magnetic fields ampere"s law. Related reading: lea and burk, chapter 28. 3, course notes (liao et al. In the lab, you will measure magnetic fields created by of coils. Similar to gauss" law for calculating the magnetic field, Ampere"s law is very useful in calculating the magnetic field, when the current is arranged in some special and symmetric configuration. As we already mentioned before, since there is no magnetic monopole, (there is no magnetic single charge . A n-pole and a s-pole always appear in pair. ) If we integrate the flux of the magnetic field coming out of any enclosed surface, the total flux will be zero. The same is true of magnetic fields biot-savart does not always provide the easiest method of calculating the field. In cases where the current source is very symmetric it turns out that ampere"s law, another of maxwell"s four equations, can be used, greatly simplifying the task.
