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Answer This................ |
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Answer» Answer: 3. 120 ohm Explanation: Taking left PARALLEL arrangement, R1 = 30×60/(30+60) = 1800/90 = 20 Now , since total is 50 ohm then R2 should be equal to (50-20)=30 ohm 30 = 40 × X/(40+X) 120 + 3X = 4X X = 120 ohm |
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