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Resistance between A to B and current in 3 ohm​

Answer»

12.2 ohm Explanation:since 2 and 3 are parallel so 1/r = 1/2 + 1/3 r = 6/5 ohmnow 4+7+6/5 are in seriesso r= 61/5 = 12.2 ohmV=IRV= 10 X 61/5V= 122 voltsV in 7 ohm = 10x 7 = 70 VV in 4 ohm = 10x 4 = 40 vV in 3 ohm = 122-(70+40)= 12V



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