Consider a proton moving parallel to a positively charged infinite thin rod at rest, as shown below.

Proton $\vec{v}$
First consider the frame in which the rod is at rest (the frame assumed in the diagram).
-(d) The proton feels a magnetic force in that frame.

Question

Consider a proton moving parallel to a positively charged infinite thin rod at rest, as shown below.
  
Proton $\vec{v}$
First consider the frame in which the rod is at rest (the frame assumed in the diagram).
-(d) The proton feels a magnetic force in that frame.

Quizplus · Accepted Answer

The Answer of Consider a proton moving parallel to a positively charged infinite thin rod at rest, as shown below.
  
Proton $\vec{v}$
First consider the frame in which the rod is at rest (the frame assumed in the diagram).
-(d) The proton feels a magnetic force in that frame.

Consider a Proton Moving Parallel to a Positively Charged Infinite v⃗\vec{v}v

Consider a Proton Moving Parallel to a Positively Charged Infinite $\vec{v}$