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What is the type of filter shown in the figure?(a) Low pass filter(b) High pass filter(c) Band pass filter(d) All pass filterThis question was posed to me in semester exam.This interesting question is from Filters topic in chapter Fundamentals of Electronics of Avionics

Answer»

Right OPTION is (a) Low pass filter

Easiest explanation: A low-pass filter can also be implemented with an inductor and a RESISTOR. At very low frequencies, the inductor has very low reactance compared to the resistance and therefore the ATTENUATION is minimum.Thus allowing lower frequencies to pass through while attenuating higher frequency signals.The cutoff frequency is determined by using the formula FCO = R/2πL.



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