A proton and an electron are moving at a particular instant as shown in Figure 21.83. (a) On a similar diagram, show the directions of the electric field and magnetic field that the proton produces at...

A proton and an electron are moving at a particular instant as shown in Figure 21.83.

(a) On a similar diagram, show the directions of the electric field and magnetic field that the proton produces at the location of the electron. (b) Show the directions of the electric force and the magnetic force that the proton exerts on the electron. (c) Similarly, show the directions of the electric field and magnetic field that the electron produces at the location of the proton. (d) Show the directions of the electric force and the magnetic force that the electron exerts on the proton. (e) Consider carefully your results from parts (b) and (d). Are the magnetic forces on electron and proton in opposite directions? Does reciprocity hold for magnetic forces? (f) Will the total momentum of the two particles remain constant? Is this a violation of conservation of momentum for an isolated system? There is momentum associated with the electric and magnetic fields of these particles, as we will see in a later chapter. Although the momentum of the proton plus the momentum of the electron does change, the sum of the particle momenta plus the field momentum does not change.