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Two particles are fixed along a straight line, separated by a distance 4.2 cm. The left one has a charge +3.0 nC and the right one has a charge of +7.0 nC. You must try to locate a point where the electric field is zero.
(a) What is the location of the point? Not on the line joining the charges. Between the other charges. To the left of the first charge. To the right of the second charge. Correct: Your answer is correct.
(b) How far from the left charge is the point? Incorrect: Your answer is incorrect. cm.
(c) Suppose that the left charge is -3 nC. Now where would you find a point where the electric field is zero?? Between the other charges. To the left of the first charge. Not on the line joining the charges. To the right of the second charge. Correct: Your answer is correct.
(d) How far is the point measured from the left charge? cm
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