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Five resistors of resistance ‘R’ are connected such that they form a letter ‘A’. Find theeffective resistance across the free ends. |
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Answer» udent,◆ Answer -Req = 8R/3● Explanation -Top 2 RESISTORS are connected in series.R' = R + RR' = 2RThis COMBINATION of 2 resistors is connected in parallel to resistor in the middle.1/R" = 1/R + 1/R'1/R" = 1/R + 1/2RR" = 2R/3This combination is in turn is series combined with 2 resistors at the base.Req = R + R" + RReq = 2R + 2R/3Req = 8R/3Therefore, the effective resistance across FREE ends is 8R/3.Thanks dear... |
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