chagre +q and -q are placed at points a and b respectively which are distance 2l apart. c is the mid point of a and b. the work done in moving a charge +q along the semicircle crd as shown in the figure below is
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didn't understand your question please ask properly In a hymn in the Rigveda, Vishwamitra used the word 'sisters' for the two rivers Beas and Sutlej.
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