A region has uniform electric and magnetic fields along the positive x

1.	A region has uniform electric and magnetic fields along the positive x-direction. An electron is fired from the origin at an angle θ (< 90°) with the x-axis. It will (a) move along a helical path of increasing pitch (b) move along a helical path of decreasing pitch initially(c) return to the yz plane at some time (d) come to rest momentarily at some position
Answer» Correct Answer is: (b, c) The electric field exerts a force opposite to the component of motion along the x-axis.

A region has uniform electric and magnetic fields along the positive x-direction. An electron is fired from the origin at an angle θ (< 90°) with the x-axis. It will (a) move along a helical path of increasing pitch (b) move along a helical path of decreasing pitch initially(c) return to the yz plane at some time (d) come to rest momentarily at some position

Answer»

Correct Answer is: (b, c)

The electric field exerts a force opposite to the component of motion along the x-axis.