The direction of the velocity $\vec{v}$ is towards south, and the direction of the magnetic field $ \vec{B}$ is towards north. These two directions are opposite to each other. The angle between $ \vec{v}$ and $\vec{B}$ is 180 degrees.
A positive charge is moving towards south in a space where magnetic field is pointing in the north direction. The moving charge will experience :
Asked in UPSC NDA 1 2023 · Topic: Electric Current (Drift velocity and microscopic origin of current)
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