The wire shown in the figure (figure 1) is infinitely long and carries a current i.

The wire shown in the figure (Figure 1)is infinitely long and carries a current I. Figure < 1 of 1 جا 2 Р

Part A Calculate the magnitude of the magnetic field that this current produces at point P. Express your answer in terms of t

Answer

The magnitude of the magnetic field that this euvrent produces at point is can be calculated from Biot - Savant law. AccordinThe direction of the field dß is perpendiclan to the plane containing the wive and the point p and here it is into the page 1Obviously do points towards the plane of the paper This is true for the field produced by all current elements. Hence, totalif we drive a right-handed cork screw along the direction of current then the direction of rotation of the thumb gives the dicob The value of magnetic field at point pis MOI 4ria from Manwell. cork serew rule we find that the direction of the magnetiThe magnitude of the magnetic field at point P is given by Biot Savart law.Here only one wire contribute effectively to the magnetic field.The direction of Magnetic field at point p is given by Maxwell's cork screw rule,in this case it is out of the page.

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