A charge is split into two parts kept a fixed distance apart: the split that gives the maximum force

1. A.
   $\frac{Q}{2},\frac{Q}{2}$
2. B.
   $\frac{Q}{3},\frac{2Q}{3}$
3. C.
   $\frac{2Q}{3},\frac{Q}{3}$
4. D.
   $\frac{Q}{4},\frac{3Q}{4}$

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1. A.
   $1\mu C$ and $3\mu C$
2. B.
   $2\mu C$ and $2\mu C$
3. C.
   0 and $4\mu C$
4. D.
   $1.5\mu C$ and $2.5\mu C$

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1. A.
   $9\mu C,1\mu C$
2. B.
   $5\mu C,5\mu C$
3. C.
   $7\mu C,3\mu C$
4. D.
   $8\mu C,2\mu C$

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