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(a) along the +x direction (b) along the -x direction (c) along the +z direction

ID: 1289012 • Letter: #

Question

(a) along the +x direction

(b) along the -x direction

(c) along the +z direction

(d) along the -z direction

Part 2: The proton is replaced by a long, straight wire carrying a current in the +y direction as shown in figure 20.8B. Is the direction of the magnetic field at point A

(a) along the +x direction

(b) along the -x direction

(c) along the +z direction

(d) along the -z direction

Part 1: A proton travels at a constant velocity, with v directed along the +y direction as shown in Figure 20.8A. At a particular moment, the proton is at the origin. Is the direction of the magnetic field at point A (a) along the +x direction (b) along the -x direction (c) along the +z direction (d) along the -z direction Part 2: The proton is replaced by a long, straight wire carrying a current in the +y direction as shown in figure 20.8B. Is the direction of the magnetic field at point A (a) along the +x direction (b) along the -x direction (c) along the +z direction (d) along the -z direction

Explanation / Answer

1.

as a moving charge can be treated as current then using right hand rule , direction of magnetic field is

(d) along the -z direction

2.

using right hand rule , here , we get diection of magnetic field as

(d) along the -z direction