ch22-p025 - 25. From symmetry, we see that the net field at...

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25. From symmetry, we see that the net field at P is twice the field caused by the upper semicircular charge +=⋅ qR λπ (and that it points downward). Adapting the steps leading to Eq. 22-21, we find () 90 net 22 90 00 ˆˆ 2j s i n j . 4 q E RR θ εε ° −° ⎛⎞ =− = ⎜⎟
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This note was uploaded on 06/07/2010 for the course PHYS 344 taught by Professor Bb during the Spring '10 term at The Petroleum Institute.

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