Gausss Law deals with electric flux: an idea of ‘how much of an electric field penetrates a miniscule area. You can take any surface and break it up into infinitely small pieces, and call the vector pointing perpendicularly outward from each area dA. The electric field is then the integral of all these tiny areas multiplied by the strength of the field, which will equate to the charge of the surface divided by the permittivity constant always by way of Gausss Law. In the video youll learn how to use Gausss Law correctly; be sure to fully understand the method before moving on. Gausss Law will simplify E&M immensely, and will allow you to do problems much quicker.
Electric flux is the amount of electric field penetrating a surface.
Normals to closed surfaces point from the inside to the outside.
The total flux through a closed surface is positive is there is more flux from inside to outside than outside to inside.
Gauss’s Law states that the total electric flux through a closed surface is equal to the enclosed charge divided by the permittivity of the material enclosed.
Gauss’s Law is useful for finding the electric field due to charge distributions for cases of spherical, cylindrical, and planar symmetry. Gauss’s Law is always true, but typically only useful in these symmetric situations.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Physics C concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes 2 full length practice exams modeled on the real test, 3 separate plans to fit your study stle, review material updated to the most recent tests, and all the terms and concepts you need to know.