Question

Answer the first question.

Answer 1

Answer:

4.42Ω

Explanation:

resistances in the square are all parallel

which comes out to be 1/9+1/9+1/9=3/9=9/3=3Ω

then resistances 2Ω and 5Ω are parallel

∴ 2×5÷2+5=10÷7=1.42Ω

Total resistance=3+1.42=4.42Ω

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Answer 2

Answer: 2.5 ohms

Explanation: 1/9 + 1/9 + 1/9 = 3/9 = 1/3

             So resistance is 3 ohms.

                   3 + 2 = 5

             So resistance is 5 ohms in series

                  1/5 +1/5 = 2/5

             So resistance is 5/2 i.e., 2.5 ohms