PHYS 1B Lecture Notes - Lecture 6: Field Line, Electric Field, Surface Charge
Document Summary
For a single charge q, e = ke (q/r^2)r. If multiple charges, the total electric field is the vector sum of the fields produced by each charge qi where i = (cid:1005),(cid:1006),(cid:1007) . Clicker question: a positive charge q is located a distance d from a 2nd identical charge. Yes, located on the outside of the charges. Lines begin on positive charge and end on negative charge. The number of lines drawn leaving the positive charge or approaching the. If excess of one type of charge, some lines will begin/end infinitely far away negative charge is proportional to the magnitude of the charge. 2 field lines never cross: ex of 2 equal positive charges: Same number of lines leave each charge since they are equal in magnitude. At great distance, field is 2q: ex of 2 charges +2q and q. 2 lines leave positive charge for each line that terminates on the negative charge.
