## PHYS208 Fundamentals of Physics II

### Hint for Ch. 23, 22P

You may reduce each of the 4 field contributions if you wish and then sum;
HOWEVER, I would highly recommend that you make a sketch, consider the symmetry of the situation, and work out the resultant direction without numbers.
Definitely save substitution of the numerical values until the very last step!

"http://www.physics.udel.edu/~watson/phys208/exercises/hints/23-22P.html"

Last updated Sept. 7, 1997.

Copyright George Watson, Univ. of Delaware, 1997.