Question

An electron and a proton are both initially moving with the same speed and in the same direction at 90º to the same uniform magnetic field. They experience magnetic forces, which are initially:

A) identical
B) equal in magnitude but opposite in direction
C) in the same direction and differing in magnitude by a factor of 1840
D) in opposite directions and differing in magnitude by a factor of 1840
E) equal in magnitude but perpendicular to each other.

Answer 1

The magnetic forces experienced by an electron and a proton are in opposite directions and differ in magnitude by a factor of 1840(option d).

Step-by-step explanation:

The magnetic forces experienced by an electron and a proton moving with the same speed and in the same direction at 90º to a uniform magnetic field are:

Option D) in opposite directions and differing in magnitude by a factor of 1840.

The magnitude of the magnetic forces on the electron and the proton are the same, but their directions are opposite. The electrons experience a larger acceleration and therefore a larger force due to its smaller mass.