Let's say we have a MRI device that has a 1,5 T magnetic field. To verify that we make a magnetic field detector made of a single circular wire with 20 cm diameter. We let it rotate at the patient opening of the device with 3000 rounds/minute. a) What would be the direction of the rotating axis to get the largest signal? b) Calculate the voltage that is to be expected between the coil wire endings? c) How could we increase the sensitivity of this measuring device?

Let's say we have a MRI device that has a 1,5 T magnetic field. To verify that we make a magnetic field detector made of a single circular wire with 20 cm diameter. We let it rotate at the patient opening of the device with 3000 rounds/minute. a) What would be the direction of the rotating axis to get the largest signal? b) Calculate the voltage that is to be expected between the coil wire endings? c) How could we increase the sensitivity of this measuring device?