31_Chapter 15 HomeworkCH15 Electric Forces and Electric Fields

31_Chapter 15 HomeworkCH15 Electric Forces and Electric Fields

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Electric Forces and Electric Fields 31 (b) Any point on the x -axis in the range 0 x < is located closer to the larger magnitude charge ( ) 5.00 C q µ = than the smaller magnitude charge ( ) 4.00 C q = . Thus, the contribution to the resultant electric field by the larger charge will always have a greater magnitude than the contribution made by the smaller charge. It is not possible for these contributions to cancel to give a zero resultant field. (c) If a point is on the x -axis in the region , the contributions made by the two charges are in opposite directions. Also, a point in this region is closer to the smaller magnitude charge than it is to the larger charge. Thus, there is a location in this region where the contributions of these charges to the total field will have equal magnitudes and cancel each other. 1.00 m
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