Question.1
Shantanu adds a 10 µH SMD power inductor (marked “100”) in series with the 3.3 V rail, hoping to reduce high-frequency noise entering his analog sensor.
However, the sensor still exhibits digital noise artifacts, and EMI doesn’t improve.
What is the most likely mistake?
Select Answer
The inductor’s DCR is too high, introducing ripple
The inductor blocks low-frequency signals but not high-frequency noise
Power inductors are not optimized for EMI filtering — ferrite beads are better suited
The inductor is shorted internally
