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Please help in finding the x ohm resistor |
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Answer» The equivalent resistance b/w A and B is 4 ohmClearly , 4 Ω and 8 Ω resistance are connected in series combination Thus ,R' = 4 + 8 R' = 12 ohmAlso , x Ω and 5 Ω resistance are connected in series combination Thus ,R" = (x + 5) ΩNow , The resistance R' form a parrallel combination with R" Thus , the equivalent resistance b/w A and B is ➡1/R = 1/12 + 1/(x + 5)➡1/R = (x + 17)/(12x + 60)➡R = (12x + 60)/(x + 17)SINCE , the equivalent resistance b/w A and B is 4 ΩThus ,Hence , the value of x is 1 ohm |
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