What should be the value of R2 to have an attenuation of 0.5, if R1=200Ω?(a) 100Ω(b) 300Ω(c) 200Ω(d) 500ΩI have been asked this question by my college director while I was bunking the class.I'd like to ask this question from Gain, Attenuation & Decibels topic in section Fundamentals of Electronics of Avionics

What should be the value of R2 to have an attenuation of 0.5, if R1=20

1.	What should be the value of R2 to have an attenuation of 0.5, if R1=200Ω?(a) 100Ω(b) 300Ω(c) 200Ω(d) 500ΩI have been asked this question by my college director while I was bunking the class.I'd like to ask this question from Gain, Attenuation & Decibels topic in section Fundamentals of Electronics of Avionics
Answer» The correct choice is (c) 200Ω Explanation: ATTENUATION =R2/(R2+R1) = 0.5 R2 = (0.5 X R2) + (0.5 X R1) (0.5 X R2) = 100Ω R2= 100/0.5 = 200Ω.

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