5) In figure at the right, the four particles form a square of edge length a= 5.00 cm and have charges q1 q2=q3 q4 10.0 nC. In unit-vector notation, what net electric field do particles 1, 2 and 3 produce at the location of particle 4? For full credit include the corresponding vector diagram. 42 !! 4

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.