Question

Which frequency does the RFID Module operate in?

(a) 12.98 MHz

(b) 14.67 MHz

(c) 19.56 MHz

(d) 13.56 MHz

This question was posed to me during an interview.

The doubt is from RFID Module topic in division Interfacing of Sensors, Actuators, and Other Modules of Arduino

Answer 1

Correct option is (d) 13.56 MHz

Explanation: The RFID Module operates in the 13.56 MHz frequency since it is the universal unregulated frequency for all scientific and medical research purposes. It was set as the standard international frequency to be followed by all, since it does not interfere significantly with the environment.