the formula Ct= C1xC2/C1+C2, please explain how to use this formula to calculate Ct.
Attachments

153.4 KB Views: 14
no, just trying to figure out how to use that formula to get the answer that was provided.Is this homework?
First off, you need to be careful regarding order of operations. Since multiplication is done before addition, what you have written above is technicallythe formula Ct= C1xC2/C1+C2, please explain how to use this formula to calculate Ct.
well, i have tried to work this problem many times and when I'm done the answer always comes out to 94First off, you need to be careful regarding order of operations. Since multiplication is done before addition, what you have written above is technically
Ct = ((C1 x C2) / C1) + C2
when what you want is
Ct = (C1 x C2) / (C1 + C2)
After that, what is it that is causing you problems? Your attachment shows values being substituted into that equation and a result being worked out.
Is it that you don't understand how (47 x 47) / (47 + 47) works out to 23.5 ?
Or does it have to do with why this formula gives the total capacitance of two capacitors in series?
so, basically i only needed to use the top portion of the formula?47x47=2209
2209/94=23.5
It would really help if you showed YOUR work, step by step, so that we can see what YOU are doing. That way we can see what you are doing wrong.well, i have tried to work this problem many times and when I'm done the answer always comes out to 94
sorry, yes i got already... just forgot the order. i was getting 2209 and 94 but, i was just doin the steps all wrong..It would really help if you showed YOUR work, step by step, so that we can see what YOU are doing. That way we can see what you are doing wrong.
But it appears that you are probably just trying to plug numbers into a calculator and completely forgetting about order of operations.
To wit:
47 * 47 = 2209
2209 / 47 = 47
47 + 47 = 94
What you NEED to do is:
(47 * 47) = 2209
(47 + 47) = 94
2209 / 94 = 23.5
by Jake Hertz
by Jake Hertz
by Jake Hertz