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[" 29.Three charges "+q,-q" and "-q" are...

[" 29.Three charges "+q,-q" and "-q" are kept at the "],[" vertices of an equatorial triangle of "10cm" side."],[" The potential at the mid point in between "-q" ,"],[-bar(q)," if "q=5 mu C" is "],[[" 1) "-6.4times10^(5)V," 2) "-12.8times10^(4)V],[" 3) "-6.4times10^(4)V," 4) "-12.8times10^(5)V],[" (a) "-6.4times10^(4)V," 4) "-12.8times10^(5)V]]

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