Each of two tong straight parallel wires d = 18.0 cm apart carries a current of

Question

Each of two tong straight parallel wires d = 18.0 cm apart carries a current of 115. A. figure 30-77 shows a cross section, with the wires running perpendicular to the page and point P lying on the perpendicular bisector of the line between the wires. Find the magnitude and direction of the magnetic field at P when the Current in the left-hand wire is out of the page into the page up down out of the page to the left to the right and Into the page. down into the page up out of the page to the right to the left

Explanation / Answer

Use the right hand grip rule , Hold the wires in the right hand with thumb being the current and curl fingures are magnetic filed, You will get the first answer as towards Left.

Second one the magnitude seems to be zero, so no direction. But not the options.

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