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A conductor AB, carrying current i, is placed vertically above and parallel to a long horizontal conductor XY, carrying current I. Assume that AB is free to move and that the wires through which currents enter and leave it do not exert any forces on it. If AB is in equilibrium, (a) i = I (b) i and I must flow in the same direction (c) the equilibrium of AB is unstable (d) if AB is given a small vertical displacement, it will undergo oscillations |
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Answer» Correct Answer is: (d) if AB is given a small vertical displacement, it will undergo oscillations The weight of AB is balanced by the ampere force on it. If it is pushed down a little, the ampere force increases. Hence, its acceleration is opposite to its displacement and it will undergo oscillation. |
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