Physics
Calculate the effective resistance across AB :
Current Electricity
ICSE 2019
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Answer
The given circuit consists of three parts.
In the first part 5 Ω and 4 Ω are in series and if the equivalent resistance is given by Rs then,
Rs = 5 + 4 = 9 Ω
Then, in second part there is parallel combination of 3 Ω and Rs (9 Ω ), if equivalent resistance is Rp
In the third part, 8 Ω and Rp ( 2.25 Ω ) are in series. Therefore, the equivalent resistance between AB i.e., RAB is
8 + 2.25 = 10.25 Ω .
Hence, Total resistance between A and B is 10.25 Ω
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