Electronics > Beginners
Simple equation to explain
(1/1)
nForce:
How do we get Z (impedance) here:

Thank you.
barry14:
If you divide the first equation by i1 (in order to get Z), then the i1 on the first term on the right hand side will divide out, but you will have the expression i2/i1 on the second term.  Use the second equation to solve for i2/i1 (easy to do since u2 = 0).  Substitute that value into the first equation and simplify.  You will then wind up with the required expression for Z.
kulky64:

--- Quote from: barry14 on November 21, 2018, 10:04:38 pm ---You will then wind up with the required expression for Z.

--- End quote ---

Yup. Hopefully with the correct expression, because there is an error in the expression for Z. Current i1 shouldn't be there at all.
barry14:
You are right.  The i1 in the equation for Z should not be there. It is removed when the division by i1 is done.
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