find the equivalent resistance between A and B if each resistor is of resistance r

Dear Student, 
Please find below the solution to the asked query: 
Effective resistance on left side of A and B:r and r in series = r + r = 2r2r and r in paralel = 2r × r2r+r                                  = 2r32r3&2r3 in series=2r3+2r3=4r3Effective resistance on right side of A and B:r and r in series = r + r = 2r2r and r in paralel = 2r × r2r+r                                  = 2r32r3&2r3 in series=2r3+2r3=4r3Effective resistance between A and B:4r3&4r3 in parallel=4r3×4r34r3+4r3=2r3
Hope this information will clear your doubts about Resistors.                      
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