Answer to Question #201828 in Electrical Engineering for tala

Question

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

Answer 1

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