Answer:
The direction of magnetic field is along + Z axis.
Step-by-step explanation:
The direction of motion of electron is along y axis.
The magnetic force is along - X axis.
The force on the charged particle moving in the magnetic field is
![\overrightarrow{F} = q (\overrightarrow{v}* \overrightarrow{B})\\\\- F \widehat{i} = - q (v \widehat{j}* \overrightarrow{B})\\](https://img.qammunity.org/2022/formulas/physics/college/71csrivxrtg934bdevsfno1bb5i941ajhc.png)
So, the direction of the magnetic field is along + Z axis.