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Physics, 21.12.2019 02:31, brillamontijo
Ahall-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 9.70 mhz . at this field strength, the hall voltage on the probe is 0.549 mv when the current through the probe is 0.146 ma . later, when an unknown magnetic field is measured, the hall voltage at the same current is 1.735 mv .
a) what is the strength of this magnetic field?
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Answers: 3
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