please help me solve this question

Tiny sensors in smartphone could be used to determine the position of the phone on the Earth's surface by measuring the Earth's magnetic eld. A current I is applied to a slice of semiconductor as shown in Figure 1(a). Figure 1(a): without magnetic eld Figure 103): with magnetic eld After detecting magnetic eld. Band of 2.55 mT on the slice, the electrons collect at the top edge of the slice and the bottom edge becomes positively charged as shown in Figure 1(1)). (a) Explain why the electrons collect at the top of the edge of the slice. (b) Determine the magnitude of the maximum magnetic force that could be exerted on the electron if the electron moves through the eld with a speed of 5.5 x 106 m s\". (c) What is the magnitude of the maximum acceleration of the electron? (d) Would the eld exert the same magnetic force exerted on a proton moving through the eld with the same Speed in (c)? Explain your answer. (e) If there is a straight wire with current of 6.0 A placed 1.5 [run near the slice of semiconductor as shown in Figure 1(c), determine the magnitude and direction of the magnetic field at point A. I wa XAX X X1151!!!" Figure lie): straight wire with current