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Question A piece of germanium, as illustrated in figure 4, contains 2.3 x 101⁹ charge carriers per m³. A current I of 0.06 mA enters one of its smallest faces which has a cross-sectional area A of 1.0 x 104 m². The germanium is placed so a magnetic field is at right angles to its largest face. As a result, a Hall voltage of 0.04 mV is produced across the germanium. Figure 4 a) Redraw figure 4 and add labels to illustrate the direction of the magnetic field and the resulting Hall voltage (the polarity of the voltage does not need to be indicated)

Question A piece of germanium, as illustrated in figure 4, contains 2.3 x 101⁹ charge carriers per m³. A current I of 0.06 mA enters one of its smallest faces which has a cross-sectional area A of 1.0 x 104 m². The germanium is placed so a magnetic field is at right angles to its largest face. As a result, a Hall voltage of 0.04 mV is produced across the germanium. Figure 4 a) Redraw figure 4 and add labels to illustrate the direction of the magnetic field and the resulting Hall voltage (the polarity of the voltage does not need to be indicated)

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Magnetic field and Hall voltage question

Question A piece of germanium, as illustrated in figure 4, contains 2.3 x 10¹9 charge carriers per m³. A current I of 0.06 mA enters one of its smallest faces which has a cross-sectional area A of 1.0 x 104 m². The germanium is placed so a magnetic field is at right angles to its largest face. As a result, a Hall voltage of 0.04 mV is produced across the germanium. Figure 4 a) Redraw figure 4 and add labels to illustrate the direction of the magnetic field and the resulting Hall voltage (the polarity of the voltage does not need to be indicated)
Transcribed Image Text:Question A piece of germanium, as illustrated in figure 4, contains 2.3 x 10¹9 charge carriers per m³. A current I of 0.06 mA enters one of its smallest faces which has a cross-sectional area A of 1.0 x 104 m². The germanium is placed so a magnetic field is at right angles to its largest face. As a result, a Hall voltage of 0.04 mV is produced across the germanium. Figure 4 a) Redraw figure 4 and add labels to illustrate the direction of the magnetic field and the resulting Hall voltage (the polarity of the voltage does not need to be indicated)
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do parts b) and c) of the question above

b) Calculate the drift velocity of the charge carriers in the germanium (each charge carrier has a charge equal to the charge on an electron) c) If d = 5 mm, calculate the magnetic flux density of the field in which the germanium has been placed.
Transcribed Image Text:b) Calculate the drift velocity of the charge carriers in the germanium (each charge carrier has a charge equal to the charge on an electron) c) If d = 5 mm, calculate the magnetic flux density of the field in which the germanium has been placed.
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