Solving for I1 from Equations 1-3 with I2=0

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SUMMARY

The discussion focuses on solving for I1 from a set of equations after setting I2 to zero. By substituting I2=0 into the equations, the expression for I1 is derived as I1 = 425/(5 + j5). This solution is obtained by manipulating the equations, specifically transforming equation 1 into V1 = j5*I1 and subsequently substituting into equation 3. The final step involves using this value of I1 to find V2 from equation 2.

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nhrock3
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after we put I2=0 in equations 1 to 3
we have expressions of I1
how did they get I1
because they presented numbers
32ztg2b.jpg
 
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If you let I2 be zero, then equation 1 becomes:

V1 = j5*I1

Substitute this into equation 3 and you have:

425<0 - 5*I1 - j5*I1 = 0

or

425<0 - (5 + j5)*I1 = 0

so that I1 = 425/(5 + j5)

Substitute this back into equation 2 (with I2 = 0), and you get V2.
 

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