63. On the one hand, the conclusion (that Q =+ 1. 0 µ C) is clear from symmetry. If a more in-depth justiFcation is desired, one should use Eq. 23-3 for the electric Feld magnitudes of the three charges (each at the same distance r = a/ √ 3f r om
This is the end of the preview. Sign up
access the rest of the document.