Summary

• Charged particle motion
• Electric flux
• Gauss's law

• Gauss’ law
• Interactive applet
1. Field selection: dipole lines
2. Floor: charge
3. Overlay: field lines
4. Display: field vectors
5. Mouse: surface integral
• spheres, cylinders, pillboxes
• charged insulators in-class activity




• Static fields and conductors

   
• video of fields in conductors
Example #1





• Prepare:
  Read textbook section 24-1 through 24-3 before the next lecture

PSE6 24.51
A hollow conducting sphere has charge −Q. It is surrounded by a larger concentric spherical shell with net charge +3Q. What is the field between the sphere and the shell?
A. kQ/r² inward
B. 2kQ/r² outward
C. 3kQ/r² inward
D. zero
Answer

























 
A. kQ/r² inward