On Tue, 2010-11-23 at 15:44 -0500, V G wrote:
> Hi all,
>=20
> My understanding of analog electronics is next to nothing. But it
> seems that to build a circuit of any sort, this knowledge is
> essential. Well, to build a good circuit anyway.
>=20
> So I have a question.
>=20
> Let's say that there's a power source with variable voltage. Across
> its terminals is a resistor of 10 Ohms. The power supply can only
> supply a maximum of 1 Amp.
>=20
> If the voltage is gradually increased, to the point where I =3D V/R > 1
> Amp, what will happen? Will Ohm's "law" not be violated?

I is less than or equal to (<=3D) 1 Amp
So  V/R <=3D 1 Amp.

R is fixed at 10 Ohm
So rearrange the inequality to give V <=3D I * R=20
V <=3D 10 Volts.

The output voltage can not rise above 10 volts if the current is to
remain at or below 1 Amp.

PeterO




--=20
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