Since it is balanced (all delta resistors equal), the star resistors are equal. [ R_star = \fracR_delta3 = \frac93 = 3\Omega ] Each star resistor = 3Ω.
[ R_CA = R_C + R_A + \fracR_C R_AR_B ]
Remember: Practice is non-negotiable. No amount of theory replaces solving ten to fifteen problems manually.
[ R_C = \fracR_BC \times R_CAR_AB + R_BC + R_CA ]
Since it is balanced (all delta resistors equal), the star resistors are equal. [ R_star = \fracR_delta3 = \frac93 = 3\Omega ] Each star resistor = 3Ω.
[ R_CA = R_C + R_A + \fracR_C R_AR_B ]
Remember: Practice is non-negotiable. No amount of theory replaces solving ten to fifteen problems manually.
[ R_C = \fracR_BC \times R_CAR_AB + R_BC + R_CA ]