What Hall voltage (in mV) is produced by a 0.180 T field applied across a 2.60 cm diameter aorta when blood velocity is 65.0 cm/s?
What Hall voltage (in mV) is produced by a 0.180 T field applied across a 2.60...
An electromagnetic flowmeter is to be used to measure blood speed. A magnetic field of 0.145 T is applied across an artery of inner diameter 3.80 mm. The Hall voltage is measured to be 89.8 V. What is the average speed of the blood flowing in the artery? cm/s
The Hall voltage across a conductor in a 44 mT magnetic field is 2.0 μV . When used with the same current in a different magnetic field, the voltage across the conductor is 3.0 μV .
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
The Hall voltage across a conductor in a 44 mT magnetic field is 1.9 μV . When used with the same current in a different magnetic field, the voltage across the conductor is 2.8 μV . What is the strength of the second field?
7) A blood flow monitor uses a 0.5T field applied to a blood vessel perpendicular to the flow and measures the voltage across the same vessel perpendicular to both the blood flow and the field. Given the blood vessel is 2mm in diameter approximate the voltage measure. Blood flow velocity is roughly 0.3 m/s in large blood vessels. a. Assume E=V/d where d is the vessel diameter b. Use v=E/B assuming the forces on the ions in blood cancel out...
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...
30. The Hall-effect generator is constructed of a. N material 31. What three factors determine voltage amplitude produced by a Hall generator? a. Size of Hall generator b. Polarity of voltage applied c. Magnetic field strength b. P material (select all) d. Magnitude of current applied by source e. Temperature of Hall generator 32. What are two methods used to increase output signal from a Hall generator? use a diode across device b. use of concentrators (tuning) a. c. increase...
15. An electron moving at 7000 m/s in a 1.35 T magnetic field experiences a magnetic force of 1.00×10-15N. What angle does the velocity of the electron make with the magnetic field? State all possible answers. 16. What is the average fluid velocity in a 5.00mm diameter vein, if a 0.250T field across it creates a 1.0mV Hall voltage? 13. A set of resistors are in a box: 50092, 1.5k, and 10k12. What is the equivalent resistance if they are...
12. What is the average fluid velocity in a 2.00mm diameter artery, if a 0.500T field across it creates a 5.0mV Hall voltage?
16. What is the average fluid velocity in a 5.00mm diameter vein, if a 0.250T field across it creates a 1.0mV Hall voltage?