Answer:
Option d - Neither technician A nor B
Step-by-step explanation:
A picoscope isused to test for the Hall-Effect type pick up trigger.
Devices which are activated by an external magnetic field are called Hall Effect Sensors . From a Hall effect sensor , the output signal is a function of magnetic field density around the device.
Hence, when the magnetic flux density around the sensor exceeds a certain pre-set threshold, the sensor detects it and generates an output voltage called the Hall Voltage, VH.