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Three point charges 1C, 2C and 3C are pl...

Three point charges `1C, 2C` and `3C` are placed at the corners of an equilaternal triangle of side `1m`. The work required to move these charges to the corners of a smaller equilaternal triangle of side `0.5 m` in two differenct ways as in fig. `(A)` and fig. `(B)` are `W_(a)` and `W_(b)` then:

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