Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

# Electrical Engineering tutorial question help watch

Announcements
1. Hi, as the title suggests I've just got a little question regarding a tutorial question.
The question is as follows:

Components of a high-pass filter are 1 kΩ and 0.02 µF. Input voltage is 20∠0° V.Determine the cutoff frequency in Hz and magnitude of output voltage when inputvoltage frequency is 2 kHz, 15 kHz, 40 kHz, and 100 kHz.

Now from my tutorial solutions, the solution is:

Cut-off frequencyω = 1/RC f = 1 / (2π RC) = 7.96 kHz
Magnitude of output voltage is VOUT = ωRC/ √[(1 + (ωRC)2] x Vin
at 2 kHz: VOUT = 4.87 V
at 15 kHz: VOUT = 17.67 V
at 40 kHz: VOUT = 19.62 V
at 100 kHz VOUT = 19.94 V

Now my question is, how do you determine the Vin in order to use the given formula.

Thanks.

Reply
Submit reply
Turn on thread page Beta
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 6, 2016
Today on TSR

### Four things top students are doing

Over the Easter break

### Her parents made her dump me

Poll

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.