Question A9 The magnetic field at a point P due to a finite wire carrying current I, positioned along the x-axis (shown in figure 5 a) is expressed as follows: μοι B = (cos 0₁ + cos 0₂) 4πl I y AN T y P b) Find the direction of the magnetic field from part a. (b) x Figure 5: A finite wire carrying current I a) along the x-axis, b) parallel to the y-axis a) Now we place the finite wire, parallel to the y-axis, as shown in figure 5b. Use the ex- pression mentioned above, and calculate the magnitude of the magnetic field of the wire at point P. [4 marks]

Question A9 The magnetic field at a point P due to a finite wire carrying current I, positioned along the x-axis (shown in figure 5 a) is expressed as follows: μοι B = (cos 0₁ + cos 0₂) 4πl I y AN T y P b) Find the direction of the magnetic field from part a. (b) x Figure 5: A finite wire carrying current I a) along the x-axis, b) parallel to the y-axis a) Now we place the finite wire, parallel to the y-axis, as shown in figure 5b. Use the ex- pression mentioned above, and calculate the magnitude of the magnetic field of the wire at point P. [4 marks]