Answer in Physics for Shami #225263

Find the magnetic force FB acting on a moving charged particle by evaluating the cross product q (V×B) in unit-vector notation and magnitude- angle notation.

Unit-vector notation:

“vec{F}=q(vec vtimes vec B).”

To write the force in unit-vector notation, we need to know the mutual location of velocity and magnetic field vectors. For instance, if B is directed along k, v is directed along j, the force will be directed along i.

This may look like

“vec F=(3textbf i+0.3textbf j-16textbf k)text{ N}.”

Magnitude-angle notation: again, we need to know the exact position or arrangement of the velocity and field. This may look like

“vec F=|F|anglethetatext{ N}.”