Statement of a problem № 10986


The drawing shows four situations in which two very long wires are carrying the same current, although the directions of the currents may be different. The point P in the drawings is equidistant from each wire. Which one (or more) of these situations gives rise to a zero net magnetic field at P? (a) 2 and 4 (b) Only 1 (c) Only 2 (d) 2 and 3 (e) 3 and 4

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