What Is Hall's Effect and How Does It Work?

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Hall's Effect describes how an applied magnetic field influences the movement of charge carriers in a conductor, resulting in a separation of charges. This separation causes one type of charge, either positive or negative, to accumulate on one side of the conductor, while the other type remains on the opposite side. The phenomenon leads to the development of a voltage across the conductor, perpendicular to both the current and the magnetic field. Understanding this effect is crucial in various applications, including sensors and measurement devices. Further information can be found in textbooks and online resources.
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What is Hall's Effect?

My professor says that depending on the conditions certain charges (either the positive ones or negative ones) get "left behind". An applied magnetic field causes one type of charge to move to the top of the conductor and the other type of charge to stay at the bottom and not move. Can anyone explain this concept to me?
 
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