Two charges placed as shown in Fig. the magnitude fql is 3.00uc, but its sign and the of the charge q2 are not known.

Two charges placed as shown in Fig. 1. the magnitude fql is 3.00uc, but its sign and the of the charge q2 are not known. The direct of the net electric field E at poinnt P is entirely in the negative y-direction. (a) considering the different possible signs of q1 and q2 there are four possible diagrams that could represent the electric field E1 and E2 produced by q1 and q2. sketch the four possible electric field configuratios. (b) using the sketches from part (a) and the direction E, deduce the signs if q1 and q2. (c) determine the magnitude of E.

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