Four charges +q,−q,+q and −q are placed in order on the four consecutive corners of a square of side a. The work done in interchanging the positions of any two neighbouring charges of the opposite sign is

Four charges +q,−q,+q and −q are placed in order on the four conse

1.	Four charges +q,−q,+q and −q are placed in order on the four consecutive corners of a square of side a. The work done in interchanging the positions of any two neighbouring charges of the opposite sign is
Answer» Four charges $+ q, - q, + q$ and $- q$ are placed in order on the four consecutive corners of a square of side $a$ . The work done in interchanging the positions of any two neighbouring charges of the opposite sign is

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Four charges +q,−q,+q and −q are placed in order on the four consecutive corners of a square of side a. The work done in interchanging the positions of any two neighbouring charges of the opposite sign is

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