Magnetic field due to currentHard
Question
A long straight wire carries a current along the x-axis. Consider the points A(0, 1, 0), B(0, 1, 1), C(1, 0, 1) and D(1, 1, 1). Which of the following pairs of points will have magnetic fields of the same magnitude -
Options
A.A and B
B.A and C
C.B and C
D.B and D
Solution

A and C have same M.F. and B and D have same M.F.
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