Question #f1496

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Answer 1 · 2016-07-01T22:07:29

$R_"AB"=5/7" "Omega$

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$R_1" and "R_2" are connected as serial"$
$R_6=R_1+R_2" ; "R_6=1+4=5" "Omega$

$R_4" and "R_5" are connected serial"$
$R_7=R_4+R_5" ; "R_7=2+3=5 " "Omega$

$R_6" , "R_3" , "R_7" are connected as parallel"$

$1/R_"AB"=1/R_6+1/R_3+1/R_7$

$1/R_"AB"=1/5+1/1+1/5$

$1/R_"AB"=(1+5+1)/5$

$1/R_"AB"=7/5$

$R_"AB"*7=5$

$R_"AB"=5/7" "Omega$