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LF: A puzzle for Monday

To: "LF Group \(E-mail\)" <[email protected]>
Subject: LF: A puzzle for Monday
From: "Talbot Andrew" <[email protected]>
Date: Mon, 11 Nov 2002 08:46:28 -0000
Reply-to: [email protected]
Sender: <[email protected]>

You have a small box whose internal workings you can't see, but the box
has two terminals. You measure these two terminals with a voltmeter, and
it measures precisely 1V. You short the two terminals with an ammeter,
and it reads precisely 1A. You then conclude the internal circuit is
either a Thevenin source (an ideal 1V voltage source with a 1-ohm series
resistor) or a Norton source (an ideal 1A current source with a 1-ohm
shunt resistor). Using standard laboratory equipment, how could you
determine which one it is.


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