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Answer added in Electrical Engineering40 Please tell me, Why the cutoff frequency is taken for 3dB and not other values like 1 or 2 db?By Cyril Robinson Azariah J · V.S.B Engineering CollegeHussein ALameri · University of BaghdadThe -3dB, come from 20 Log (0.707) or 10 Log (0.5). to determine the bandwidth of signal, when decrease the voltage from maximum to 0.707Max or decre... [more]The -3dB, come from 20 Log (0.707) or 10 Log (0.5). to determine the bandwidth of signal, when decrease the voltage from maximum to 0.707Max or decreasing the power from max to half power.Following