Question #201828

For high-pass active filter with corner

frequency 8 kHz, then R and C are:

Select one:

a. 2.5 k Ω , 7.9557 nF

b. 2 k Ω , 7.9557 nF

c. 5 k Ω , 7:9557 nF nF

d. 10 k Ω , 7.9557 nF

e. 1 k Ω ,7.9557 nF

Expert's answer

Corner frequency ,

"f_c= \\frac{1}{2\\pi RC}"

From option C= 7.9557 nF is selected

Corner frequency = 8kHz

Hence Resistance,

"R=\\frac{1}{2\\pi f_c C}= \\frac{1}{2\\pi\\times 8\\times10^3 \\times7.9557\\times10^{-9}}"

"R=2500 \\varOmega =2.5k\\varOmega"

Hence option A is the correct answer

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