Two technicians are discussing passive-type wheel speed sensors. technician a sys that wheel speed sensors are magnetic. technician b says that the toothed sensor ring is magnetic. which technician is correct?

I'd say (A) Technician A

Wheel speed sensors are a necessary sensor input and ABS component. The conventional wheel speed sensor consists of a magnetic pin with copper wire wrapped around to create a magnetic field. The purpose of the toothed metal ring is to pass through the sensor’s magnetic field. The sensor changes polarity as the metal ring passes through.