Hi all,

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.

So I have a question.

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.

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?

In the case of the battery charger example:

A NiMH battery should be trickle charged (assume constant current of a
few milliamps, rather than a high current pulse). The battery has a
relatively low internal resistance. How can the current supplied to
the battery be controlled precisely when the applied voltage is
relatively constant?
--=20
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