Consider a magnetic field that (as shown in the diagram to the left below) points purely in the $+x$ direction in the unprimed frame (the $+z$ axis points toward the viewer in the drawing). There is zero electric field in this frame.

Consider a primed frame that moves in the $+x$ direction with respect to the unprimed frame. Choose from the answers above and to the right to indicate the direction of
-(b) the magnetic field in the primed frame.
A) A
B) B
C) C
D) D
E) Toward the viewer $F$. Away from the viewer $T$. There is no field of this type.

Question

Consider a magnetic field that (as shown in the diagram to the left below) points purely in the $+x$ direction in the unprimed frame (the $+z$ axis points toward the viewer in the drawing). There is zero electric field in this frame.
  
Consider a primed frame that moves in the $+x$ direction with respect to the unprimed frame. Choose from the answers above and to the right to indicate the direction of
-(b) the magnetic field in the primed frame.
A) A 
B) B 
C) C 
D) D 
E) Toward the viewer $F$. Away from the viewer $T$. There is no field of this type.

Quizplus · Accepted Answer

The Answer of Consider a magnetic field that (as shown in the diagram to the left below) points purely in the $+x$ direction in the unprimed frame (the $+z$ axis points toward the viewer in the drawing). There is zero electric field in this frame.
  
Consider a primed frame that moves in the $+x$ direction with respect to the unprimed frame. Choose from the answers above and to the right to indicate the direction of
-(b) the magnetic field in the primed frame.
A) A 
B) B 
C) C 
D) D 
E) Toward the viewer $F$. Away from the viewer $T$. There is no field of this type.

Consider a Magnetic Field That (As Shown in the Diagram +x+x+x

Consider a Magnetic Field That (As Shown in the Diagram $+x$