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But first, a stunning revelation. I am younger than my daughter. Really, I am!
More! Danny De Vito is taller than Michael Jordan. Believe it or not!
Puzzled? How can that be? Don't be!
I am negative twenty years younger than my daughter.
And Danny De VIto is negative 18 inches taller than Michael Jordan!
or we can flip about the arrow, change the sign of the 5, and say ...
On the voltage side, we could do the same
Summarizing. It is the same thing to say
that five amps flow that way, than to say that negative five amps flow the other way.
Or ... it is the same thing to say that the right hand is seven volts highter than the left hand,
or to say that the left hand is negative seven volts above the right hand. It is the same thing.
A word of advice. Do not go changing direction of "current arrows",
A word of advice. Do not go changing direction of "current arrows",
or switching the plus and minus sign of voltages just to get positive values
Don't do that! It is not important!
Even more! Sometimes, it's not even convenient as we shall see soon.