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JEE Main Physics Class 12 Moving Charges and Magnetism Part 1 Questions

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Question : 10

Total: 100

As shown in the figure, two infinitely long, identical wires are bent by 90° 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 magneticf field at O is 10−4T, 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 (µ0=4π×10−7NA−2):

""[12 Jan 2019, I]

20 A, perpendicular out of the page
40 A, perpendicular out of the page
20 A, perpendicular into the page
40 A, perpendicular into the page

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