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Four parallel conductors, carrying equal currents, pass vertically through the four corners of a square \( W X Y Z \). In two conductors, the current is flowing into the page, and in the other two out
\( P \) of the page. In what directions must the currents flow to produce a resultant magnetic field in the direction shown at W \( O \), the center of the square ?
Into the page
Out of the page
(1) \( W \) and \( Y \) \( X \) and \( Z \)
(2) \( X \) and \( Z \) \( W \) and \( Y \)
(3) \( W \) and \( Z \quad X \) and \( Y \)
(4) \( W \) and \( X \quad Y \) and \( Z \)
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