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Plot a graph showing the variation of coulomb force (F) versus ((1)/(r^(2))) , where r is the distancebetween two charges of each pair of charges: (1mu C, 2 mu C) and (2 mu C, -3 mu C), interpret the graphs obtained. |
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Answer» Solution :According to Coulomb'slaw, `F oo q_(1) q_(2)` and `F = oo(1)/(r^(2))` Therefore, both pairs of charges graph between Fand `(1)/(r^(2))` is a straight line.Between`(1 mu C, 2 muC)`, FORCEIS positive/ repulsive andproportionalto `1 (2) = 2`. Between `(2 muC and -3 muC)` force is negative/ attractive and proportional to `2 (3) = 6` Therefore, in Fig1(a).25, OA REPRESENTS thevariation betweenF and `l//r^(2)` for the pair `(1 mu C,2mu C)` And ,OB represents the variation betweenF and`l//r^(2)` for the secound pair `(2 muC, -3 muC)`. 
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