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Which one the following options represents the magnetic field B G at O due to the current flowing in the given wire segments lying on the xy plane ?

k ˆ 2 4 1 2 3 L I – B 0 ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ π + μ = G
k ˆ 2 2 1 2 3 L I – B 0 ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ π + μ = G
k ˆ 2 4 1 1 L I – B 0 ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ π + μ = G
k ˆ 4 1 1 L I – B 0 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π + μ = G

Correct answer: k ˆ 2 4 1 1 L I – B 0 ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ π + μ = G

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