The force on a charged particle moving in a magnetic field can be computed as the vector sum of the force due to each separate component of the magnetic field. As an example, a particle with charge q is moving with speed v in the -y direction. It is moving in a uniform magnetic field B→=Bxiˆ+Byjˆ+Bzkˆ. a. What are the components of the force F→ exerted on the particle by the magnetic field? b. If q>0, what must the signs of the components of B→ be if the components of F→ are all non-negative? c. If q0, find the direction and magnitude of F in terms of |q|, v and Bx.


