Answer:
negative y direction
Explanation:
Use Fleming's left hand rule
Fleming’s left - hand rule states that if we stretch the thumb, middle finger and the index finger of the left hand in such a way that they make an angle of 90 degrees(Perpendicular to each other) and the conductor or charged particle placed in the magnetic field experiences Magnetic force.
Such that:
Thumb: It points towards the direction of force (F)
Middle Finger: It represents the direction of the current (I)
Index Finger: It represents the direction of the magnetic field (B)
Since current travels in the opposite direction to the negatively charged electron you have to point the middle finger in the positive z direction and Index finger in positive x direction. Then the thumb will be poinTed in the negative y direction
