Question

What is the optimum current that is required to operate the GSR Sensor?

(a) 20 mA

(b) 15 mA

(c) 200 A

(d) 1 A

I have been asked this question in an interview for job.

This intriguing question originated from GSR Sensor topic in portion Interfacing of Sensors, Actuators, and Other Modules of Arduino

Answer 1

Right option is (b) 15 mA

For explanation I would say: The current rating on any Sensor is given so that users can know what is the optimum current that needs to be fed to the active sensor such that the internal electronics is not destroyed by excess current.