Electricity and Magnetism Hw: All Chapter 5 problems and exercises Electricity and Magnetism Physics 208 Dr. Tatiana Erukhimova Lecture 12

Outline Applications of Gauss’s Law - The single Fixed Charge Field of a sphere of charge Field of a spherical shell A Line of Charge Conductors and Insulators The electric field of a conductor The field in the cavity of a conductor; Faraday’s Cage

Gauss’s Law The total flux of electric field out of any closed surface is equal to the charge contained inside the surface divided by .

Conductors and insulators Charges reside at the surface of the conductor + + + + + + + + Conductor + + E=0 + + + + +

Solid conducting sphere with charge Q V r A r

Electric field of a ball of charge Q Electric field outside of a charged sphere is exactly the same as the electric field produced by a point charge, located at the center of the sphere, with charge equal to the total charge on the sphere.

105-109 Heldenfels First exam Tuesday, Feb 11, 7 pm Sections 521, 522 room 105 Sections 523, 524 room 107 Sections 525 room 109

No calculators and cell phones BRING YOUR STUDENT ID! No calculators and cell phones

What is included? Chapters 1-4

Be prepared for the test! Have a great day! Be prepared for the test!