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Question
Three charges of unequal magnitudes can remain in equilibrium if arranged on a
[Assume two charges of same nature]
Three charges of unequal magnitudes can remain in equilibrium if arranged on a
[Assume two charges of same nature]
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Solution
The correct option is D straight line
For equilibrium, net force has to be zero on any charge present in the system
If arranged on a circle:
From the diagram, we can see that net forces on charges (F1,F2 and F3) are not zero.
Therefore, they are not in equilibrium.
If arranged on a triangle:
Similar as arranged on a circle. Therefore, it is also not in equilibrium.
If arranged on a straight line:
In this case, it is possible to get equilibrium arrangement as on any of the three charges, the two forces are acting in opposite directions.
For equilibrium, net force has to be zero on any charge present in the system
If arranged on a circle:
From the diagram, we can see that net forces on charges (F1,F2 and F3) are not zero.
Therefore, they are not in equilibrium.
If arranged on a triangle:
Similar as arranged on a circle. Therefore, it is also not in equilibrium.
If arranged on a straight line:
In this case, it is possible to get equilibrium arrangement as on any of the three charges, the two forces are acting in opposite directions.
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