Two wires carry the same current I at right angles to each other as shown. At points 3 & 4 in the figure below, is the total magnetic field strong or weak (i.e. large or small magnitude)? 1. 3 Strong @ 3, Strong @ 4 O Weak @ 3, Strong @4 O Weak @ 3, Strong @4 Strong @ 3, Weak @4
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