# Charge in Variable Magnetic Field - 1

On a normal co-ordinate axis. A magnetic field exists given by $$B=-{ B }_{ 0 } x \hat { k }$$ . A point particle of charge $$q$$ and mass $$m$$ is placed at the origin and given an initial velocity $$v_{0}$$ in the positive x direction.

How will its trajectory be?

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