A Hall effect probe used to measure magnetic fields is made with a copper bar of...
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A Hall effect probe used to measure magnetic fields is made with a copper bar of thickness 2.50 μm . The conduction electron density of copper is 8.47x1028 m−3. |
Part A If the current in the bar is 440 mA , find the perpendicular magnetic field present when the Hall potential difference is 2.0 V . Express your answer to two significant figures and include the appropriate units. |
Part B
If the current in the bar is 440 mA , find the perpendicular magnetic field present when the Hall potential difference is 1.0 mV .
Express your answer to two significant figures and include the appropriate units.
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A Hall effect probe used to measure magnetic fields is made with
a copper bar of...
I Review A Hall-effect probe to measure magnetic field strengths needs to be calibrated in a...
I Review A Hall-effect probe to measure magnetic field strengths needs to be calibrated in a known magnetic field. Although it is not easy to do, magnetic fields can be precisely measured by measuring the cyclotron frequency of protons. A testing laboratory adjusts a magnetic field until the proton's cyclotron frequency is 9.80 MHz . At this field strength, the Hall voltage on the probe is 0.547 mV when the current through the probe is 0.141 mA . Later, when...
3. A Hall effect probe to measure magnetic field strengths needs to be calibrated in a known...
3. A Hall effect probe to measure magnetic field strengths needs to be calibrated in aknown magnetic field. Magnetic fields can be very precisely measured by measuring thecyclotron frequency of protons. A testing laboratory adjusts the magnetic field until theproton’s cyclotron frequency is 10.0 MHz. At this field strength, the Hall voltage on theprobe is 0.543 mV when the current through the probe is 0.15 mA. Later, when anunknown magnetic field is measured, the Hall voltage for the same current...
In a probe that uses the Hall effect to measure magnetic fields, a 12.8 A current...
In a probe that uses the Hall effect to measure magnetic fields, a 12.8 A current passes through a 1.80 cm -wide 1.32 mm -thick strip of sodium metal. If the Hall emf is 1.90 μV , what is the magnitude of the magnetic field (take it perpendicular to the flat face of the strip)? Assume one free electron per atom of Na, and take its specific gravity to be 0.971.
A Hall probe is calibrated using a magnetic field B that causes protons to have a...
A Hall probe is calibrated using a magnetic field B that causes protons to have a cyclotron frequency fcyc = 9.7 MHz. At this field strength the Hall voltage is AVH= 0.570 mV when the current through the probe is / = 0.17 mA. The probe is then placed in another magnetic field B and the Hall voltage at the same current is measured to be AVH = 1.750 mV. What is the strength of the unknown magnetic field, B?...
A Hall probe serves to measure magnetic field strength. Such a probe consists of a poor...
A Hall probe serves to measure magnetic field strength. Such a probe consists of a poor conductor 0.159 mm thick, whose charge-carrier density is 1.31 × 1025 m–3. When a 2.29-A current flows through the probe, the Hall voltage is measured to be 3.67 mV. What is the magnetic field strength?
A Hall-effect probe operates with a 120-mA current. When the probe is placed in a uniform...
A Hall-effect probe operates with a 120-mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0820 T, it produces a Hall voltage of 0.720 V. (a) When it is used to measure an unknown magnetic field, the Hall voltage is 0.320 WV. What is the magnitude of the unknown field? x Your response differs from the correct answer by more than 10%. Double check your calculations. mt (b) The thickness of the probe in the...
Constants I Periodic Table Part A In a probe that uses the Hall effect to measure...
Constants I Periodic Table Part A In a probe that uses the Hall effect to measure magnetic fields, a 13.6 A current passes through a 1.74 cm -wide 1.14 mm-thick strip of sodium metal. If the Hall emf is 1.86 μν , what is the magnitude of the magnetic field (take it perpendicular to the flat face of the strip)? Assume one free electron per atom of Na, and take its specific gravity to be 0.971. Submit Request Answer
The Hall voltage across a conductor in a 50 mT magnetic field is 1.9 xV. When...
The Hall voltage across a conductor in a 50 mT magnetic field is 1.9 xV. When used with the same current in a different magnetic field, the voltage across the conductor is 3.0 V. Part A What is the strength of the second field? Express your answer to two significant figures and include the appropriate units. B2 = Value Units Submit Request Answer
5.3. A Hall effect device is used to measure the strength of an external magnetic field....
5.3. A Hall effect device is used to measure the strength of an external magnetic field. The device is oriented in the way described in Fig. 5.1. It is made from a cube of p-type silicon with hole concentration cm3 where the length of each side of the cube is 1 mm current of 3 mA is applied through the device. The voltage measured across the device is 2.4 mV. Find the strength of the external magnetic flux density, |B|.
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A 24.0-cm diameter coil consists of 45 turns of circular copper wire 3.0 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 7.85×10−3 T/s . The resistivity of copper is 1.68×10−8Ω⋅m. Determine the current in the loop. (Express your answer to two significant figures and include the appropriate units.) Determine the rate at which thermal energy is produced. (Express your answer to two significant figures and include the appropriate units.)
I Review A Hall-effect probe to measure magnetic field strengths needs to be calibrated in a known magnetic field. Although it is not easy to do, magnetic fields can be precisely measured by measuring the cyclotron frequency of protons. A testing laboratory adjusts a magnetic field until the proton's cyclotron frequency is 9.80 MHz . At this field strength, the Hall voltage on the probe is 0.547 mV when the current through the probe is 0.141 mA . Later, when...
A Hall probe is calibrated using a magnetic field B that causes protons to have a cyclotron frequency fcyc = 9.7 MHz. At this field strength the Hall voltage is AVH= 0.570 mV when the current through the probe is / = 0.17 mA. The probe is then placed in another magnetic field B and the Hall voltage at the same current is measured to be AVH = 1.750 mV. What is the strength of the unknown magnetic field, B?...
A Hall-effect probe operates with a 120-mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0820 T, it produces a Hall voltage of 0.720 V. (a) When it is used to measure an unknown magnetic field, the Hall voltage is 0.320 WV. What is the magnitude of the unknown field? x Your response differs from the correct answer by more than 10%. Double check your calculations. mt (b) The thickness of the probe in the...
Constants I Periodic Table Part A In a probe that uses the Hall effect to measure magnetic fields, a 13.6 A current passes through a 1.74 cm -wide 1.14 mm-thick strip of sodium metal. If the Hall emf is 1.86 μν , what is the magnitude of the magnetic field (take it perpendicular to the flat face of the strip)? Assume one free electron per atom of Na, and take its specific gravity to be 0.971. Submit Request Answer
The Hall voltage across a conductor in a 50 mT magnetic field is 1.9 xV. When used with the same current in a different magnetic field, the voltage across the conductor is 3.0 V. Part A What is the strength of the second field? Express your answer to two significant figures and include the appropriate units. B2 = Value Units Submit Request Answer
5.3. A Hall effect device is used to measure the strength of an external magnetic field. The device is oriented in the way described in Fig. 5.1. It is made from a cube of p-type silicon with hole concentration cm3 where the length of each side of the cube is 1 mm current of 3 mA is applied through the device. The voltage measured across the device is 2.4 mV. Find the strength of the external magnetic flux density, |B|.
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