Finding current using reciprocity theorem in resistor network

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bibo_dvd
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hello guys :))

the question is :
RUkFKY3.png

NGhyEF7.png


in (a)
IT= 10/[4k||8k+4k||4k]=2.14 mA

but i can't calculate I so please guys help me i tried many times to get it but i couldn't :(

thx guys !
 

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bibo_dvd said:
hello guys :))

the question is :
RUkFKY3.png

NGhyEF7.png


in (a)
IT= 10/[4k||8k+4k||4k]=2.14 mA

but i can't calculate I so please guys help me i tried many times to get it but i couldn't :(

thx guys !

I'm not following the equation you wrote for IT (I assume that is the I in the first figure?).

Try re-drawing the circuit, and calculate the voltage of the shorting midpoint wire. Given that voltage, you can calculate the currents in the different legs of the circuit, which will give you I.
 

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