jim wrote:
> I have a question.  Can anyone (or more than one), give me their answer t=
o
> this question...
>
> If there is a current of 10ma charging a 1uF capacitor, what is the volta=
ge
> across the capacitor at 100ms?
>  =20
You don't really need calculus for this one (calculus would only been=20
needed if charging
with a voltage dependent current (e,g. charging from a voltage source=20
through a resistor).

Assuming the charge on the capacitor is zero at time zero (you didn't=20
specify any boundry
conditions)

Using SI units through (I could put unit symbols on but given that this=20
is a plain text email
they would probablly confuse more than help)

Q =3D (10x10^-3)*(100*10^-3)=3D10^-3
C =3D 10^-6

C =3D Q/V
(10^-6)=3D(10^-3)/V
V=3D1000

Of course in practice you will almost never be charging from a constant=20
current source...

> I have calculated my answer twice, and come up with the same answer twice=
..
> But it just doesn't seem right to me.
> So, I thought I'd get an independent, impartial answer to verify or deny =
my
> answer.
>
> If you choose, put your solution to the answer down too, so I can follow
> your thinking.  I am not in school, and=20
> this is not a homework question.  I am just curious.  It's actually a
> problem in an electronics book, and I wanted=20
> to answer it, but I don't think my answer is correct, and the answer isn'=
t
> in the book.
>
> Thanks and Regards,
>
> Jim
>
>  =20

--=20
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