A dipole of 2μC charges each, consists of the positive charge at the point P(1,−1) and the negative charge is placed at the point Q(−1,1). The work done in displacing a charge of +1μC from point A(−3,−3) to B(4,4) is:
1.6×10−19J
3.2×10−19J
zero
4.8eV
A
3.2×10−19J
B
zero
C
1.6×10−19J
D
4.8eV
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Solution
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The correct option is C zero The charge 1μC is moved along equitorial line of the dipole. Potential of dipole along equitorial line is zero. Hence, work done in displacing 1μC along AB is zero.
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