As shown in the figure, two infinitely long, identical wires are bent by 90o and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm, and the magnitude of the magnetic field at O is 10â€“4 T, and the two wires carry equal currents (see figure), the magnitude of the current in each wire and the direction of the magnetic field at O will be ($\mu $0 = 4$\pi $ $ \times $ 10â€“7 NAâ€“2) :

Question

As shown in the figure, two infinitely long, identical wires are bent by 90^o and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm, and the magnitude of the magnetic field at O is 10^â€“4 T, and the two wires carry equal currents (see figure), the magnitude of the current in each wire and the direction of the magnetic field at O will be ($\mu $₀ = 4$\pi $ $ \times $ 10^â€“7 NA^â€“2) :

40 A, perpendicular into the page

40 A, perpendicular out of the page

20 A, perpendicular into the page

40 A, perpendicular out of the page

Solution

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