I don't get it Example 2.I4 about energy conservation states in the final answer 0.002v=0.001.(v^2) so v=0.5... I mean shoudn't it be v1=2 and v2=0 , right? What am I doing wrong?

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venomghost · Answer

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anonymous · Answer

There is an arithmetic error on the final equation of the example:  0.002v = 0.001v2 solves to v=2, not as stated v=0.5

venomghost · Answer

Ohhhh so I'm not crazy :) got it right thanks slygato! :)

anonymous · Answer

Also, v=2 is across both elements so there is a single v=2, not separate v1 for source and v2 for the resistor.  Therefore, your statement v1=2 and v2=0 isn't correct.  If you remember that voltage values are always related to two points you can see that there can only be a single voltage in this circuit.

venomghost · Answer

no I was talking in math, remember that's a cuadratic expression therefore the root has two values, the only posible values that satisfy the equation are 2V and 0V , but of course we just need the 2V for this example

anonymous · Answer

oh, ok.  I missed that.

venomghost · Answer

no problem thanks for the help :)