Two parallel beams of protons and electrons, carrying equal currents are fixed at a separation d. The protons and electrons move in opposite directions. P is a point on a line joining the beams, at a distance x from any one beam. The magnetic field at P is B. If B is plotted against x, which of the following best represents the resulting curve
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The magnetic field at points to the right of the proton beam acts perpendicular to the paper inwards ( × × ). The magnetic field at points to the left of the electron beam acts perpendicular to the paper outwards ( ⋅ ⋅ ).
Magnetic field at mid point M is zero.
Magnetic field at the points closer to proton beam acts perpendicular to the paper inwards (i.e. ( × × )) and at the points closer to electron beam it acts outwards i.e. ( ⋅ ⋅ ). In the given options graph satisfies all the conditions.
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