we r saying that low pass rc filter will allow low frequency components n atte

we r saying that low pass rc filter will allow low frequency
components n attenuates the high frequency components..but
at low frequency reactance offer by capacitor is high..it
will act as open circuit..hence there will no output..but
practically we getting output. how?

Question Posted / pinky03_sagi

2 Answers
4350 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

we r saying that low pass rc filter will allow low frequency components n attenuates the high freq..

Answer / varunkumar_89

See,the open circuit does mean voltage = 0. It means current =0. The reverse is true for short circuit situation. At low frequencies the capacetive reactance becomes high, the there is lesser current flowing through capacitor. Hence there is more voltage drop across it. Thus the all input appears across capacitor. When frequency is zero (DC signal), there is almost zero current through capacitor. Hence maximum voltage is present across it. So we get the output.

Is This Answer Correct ?

2 Yes

0 No

we r saying that low pass rc filter will allow low frequency components n attenuates the high freq..

Answer / ravi shanker

At low frequency the reactance offer by capacitor is high. For dc current which frequency is zero reactance offer by capacitor is infinite. so ur statement is wrong about the reactance offer by capacitor at low frequency.

Is This Answer Correct ?

3 Yes

7 No

Post New Answer

More Electronics Communications Interview Questions

syllbus for the aptransco for ece

0 Answers

96 The high-frequency response in RC active filters using op-amp is due to A BW B Gain C Gain,BW product D High frequency

1 Answers

which are the five general EMI(electromagnetic interference) testings conducted on any system?

0 Answers Infosys,

why gmsk modulation is used in gsm?

2 Answers

what is the ratio of Rf &R1 in wean bridge oscillator

0 Answers

hi,iam mandhamihtlleshreddi,igot admission in rostock ujniversity,germany,ielts score-5.5 bands,iwant to go to germany,plz suggest me what questions are asked in iterview?

2 Answers German Consulate, Sneha, Wipro,

What is the zener breakdown?

0 Answers

Power mosfet is a voltage controlled device. Why?

0 Answers

Explain digital circuits and the various components used in creating them?

0 Answers

i am electronics & comm engg & appling 4 the AAI jr executive (electronics/ATC) written test. pls forward me the syllabus & old question papers.I will be very much thankful to you akil403@yahoo.com

0 Answers

why we use zener diode in switching action

1 Answers

What is a mosfet? How is it different from a jfet? What are its typical applications?

0 Answers

For more Electronics Communications Interview Questions Click Here