a. Sketch the electric field lines in the vicinity of two opposite charges, where the negative charge is three times greater in magnitude than the positive. (See Figure 1S.47 for a similar situation).
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Three equal positive charges q are at the corners of an equilateral triangle of side a as shown in Figure P22.23. Assume the three charges together create an electric field. (a) Sketch the field lines in the plane of the charges. (b) Find the location of one point (other than ∞) where the electric field is zero. What are (c) the magnitude of the electric field at P due to the two charges at the base?
Figure P22.23
