Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is__________? / Electrical Engineering Mcqs, Passive Filters / By admin Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is__________? A. 0 dB B. 8.30 dBC. -8.30 dB D. 0.8 dB