Physics - Current Electricity Question with Solution | TestHub
Given are four arrangements of three fixed electric charges. In each arrangement, a point labelled P is also identified. A test charge +q is placed at P . All of the charges are of the same magnitude Q , but they can be either positive or negative as indicated. The charges and point P all lie on a straight line. The distances between adjacent items, either between two charges or between a charge and point P are same
Correct order of choices in a decreasing order of magnitude of force on P is
Options:
Answer:
Solution:
In (I) and (II), forces on P due to all three charges are in same directions, but in case (II) distances are minimum. Hence forces (II > I). In case (III) force on P will be toward left and in (IV), force will be toward right. But on calculation forces IV III .