The Hall affect is used to measure the carrier density of a thin sheet of electrons. When a current of 80.0 μA flows through the length of the electron sheet, which is 1.2-mm long, 0.27- mm wide and 12-nm thick, a magnetic field perpendicular to the sheet produces a potential difference of 0.53 mV across the width of the sheet. If the carrier density in the electron sheet is 6.74 × 1025 m-3, what is the magnitude of the magnetic field?
The Hall affect is used to measure the carrier density of a thin sheet of electrons. When a current of 80.0 μA flows through the length of the electron sheet, which is 1.2-mm long, 0.27- mm wide and 12-nm thick, a magnetic field perpendicular to the sheet produces a potential difference of 0.53 mV across the width of the sheet. If the carrier density in the electron sheet is 6.74 × 1025 m-3, what is the magnitude of the magnetic field?
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Transcribed Image Text:The Hall affect is used to measure the carrier
density of a thin sheet of electrons. When a
current of 80.0 µA flows through the length of
the electron sheet, which is 1.2-mm long, 0.27-
mm wide and 12-nm thick, a magnetic field
perpendicular to the sheet produces a
potential difference of 0.53 mV across the
width of the sheet. If the carrier density in the
electron sheet is 6.74 x 1025 m-3, what is the
magnitude of the magnetic field?
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