Part A

An electron is projected vertically upward with a speed of $\backslash (1\mathrm{.}65\backslash$times $10^\{6\}\backslash$mathrm$\{$~m$\}/\backslash$mathrm$\{$s$\}\backslash )$ into a uniform magnetic field of $0\mathrm{.}570$ T that is directed horizontally away from the observer.

Describe the electron's path in this field.

The path is a straight line.

The path is a circle.

The path is a parabola.

The path is a circular helix.