Electricity and Magnetism Hw: All Chapter 2 problems and exercises Electricity and Magnetism Physics 208 Dr. Tatiana Erukhimova Lecture 5

Example 1: Electric field of a point charge is directly radially away from or toward the charge. Example 2: Electric field of a dipole

Example 3: Electric field at the center of a charged ring Think first! (before you start to do calculations)

Example 5: Find the electric field at the center of a semi-circle of radius R, if a charge Q is uniformly spread over the semi-circle. O

Example 4: Electric field on ring’s axis

Example 6: Electric field on disk’s axis z

Have a great day! Please don’t forget your pictures Hw: All Chapter 2 problems and exercises Reading: Chapter 3