The area shown is the boundary of a magnetic field directed in the positive z di

Question

The area shown is the boundary of a magnetic field directed in the positive z direction. An electron with a velocity along the x-axis enters the field at coordinates (x, y) = (?5 m, 0) and exits 0.43 ?s later at point A whose coordinates are (x, y) = (0, 5 m).

What is the magnitude of B? ? The mass of the electron is 9.109 10?31 kg and the elemental charge is ?1.602 10?19 C.

Answer in units of microT.

The area shown is the boundary of a magnetic field directed in the positive z direction. An electron with a velocity along the x-axis enters the field at coordinates (x, y) = (?5 m, 0) and exits 0.43 ?s later at point A whose coordinates are (x, y) = (0, 5 m). What is the magnitude of B? ? The mass of the electron is 9.109 ½ 10?31 kg and the elemental charge is ?1.602 ½ 10?19 C. Answer in units of microT.

Explanation / Answer

r=mv/eB

B=mve/er

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