The equivalent resistance between A and B of the network shown in figure is: Image
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The equivalent resistance between A and B of the network shown in figure is: Image

G1 Physics · Accepted Answer

The bridge is balanced because R/(2R)=3R/(6R), so no current flows through 9R. Upper branch resistance is R+3R=4R and lower branch is 2R+6R=8R. Their parallel equivalent is (4R×8R)/(12R)=8R/3.