# Magnitude of phasors question

Discussion in 'Homework Help' started by tadm123, Dec 2, 2013.

Nov 20, 2013
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0
$\sqrt{}$$\sqrt{}$Can anyone help me, I'm trying to find the magintude of

H=(jω+10)$^{2}$

|H|= ?

My attempt, solving it so far.

H= j$^{2}$ω$^{2}$+20jω+100

H= (-1)ω$^{2}$+20jω+100

|H|= sqrt( (-ω$^{2}$+20jω)$^{2}$+100$^{2}$)

But I'm stuck here, any help would be appreciated. Thanks

Last edited: Dec 2, 2013
2. ### WBahn Moderator

Mar 31, 2012
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5,765
Q1) What is the expression for H in the form H=a+jb ?

Q2) What is the expression for |H| in terms of 'a' and 'b' from Q1?

3. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,976
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Is the answer supposed to be a number or expression?

4. ### WBahn Moderator

Mar 31, 2012
20,267
5,765
Since ω isn't specified, it's going to have to be an expression.