Calculating frequency

davenn

Moderator
Sep 5, 2009
14,470
Joined
Sep 5, 2009
Messages
14,470
it would be because you forgot to convert 200mH into Henries and 10 pF into Farads
do that and try again and you should get the correct final result ( the answer is still in Hz)

Dave
 
Last edited:

Electro132

Feb 12, 2013
261
Joined
Feb 12, 2013
Messages
261
Darn it, i got 7.02481473e-8 as the answer. This is what i did:

1 / 2 * pi * sqrt (0.0002 * (10 * 10 to the power of -12)) = 7.02481473e-8

I don't get it.
 

davenn

Moderator
Sep 5, 2009
14,470
Joined
Sep 5, 2009
Messages
14,470
you are using the wrong numbers

200mH isn't 0.0002 H its 0.2 H

10pF = 1 x 10-11 F



Dave
 
Last edited:

Electro132

Feb 12, 2013
261
Joined
Feb 12, 2013
Messages
261
Its all good. I found out that i had made a mistake with the henries. I accidentally thought mH was micro when it was really milli. :) I guess it comes with learning. Thanks for the help davenn.

Cheers
 
Last edited:

BobK

Jan 5, 2010
7,682
Joined
Jan 5, 2010
Messages
7,682
Did you use the right multipliers? 1/1000 for mH and 1/1,000,000,000,000 for pF?

I get the answer in the example.

Bob
 
Top