Seven 1 Ω resistance are connected as shown in the figure. Resistance of the conducting wires is negligible.
Find the effective resistance between A and B.
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Answered by
1
Answer:
to find the resistance between a and b
we need to add two parallel resistors and one series resistor connected in series.
Answered by
4
Answer:
The equivalent/effective resistance between A and B is 2/5 Ω.
Explanation:
Equivalent resistance =
★ 1/RP = 1/R1 + 1/R2
= 1/1 + 1/1
= 2/1
RP = 1/2 Ω
Similarly, other 1 Ω resistors in parallel can be replaced with 1/2 Ω resistors.
★ RS = 1/2 + 1 + 1/2
= 1/2 + 2/2 + 1/2
= 4/2
= 2 Ω
★ 1/RP = 1/2 + 1/(1/2)
= 1/2 + 2/1
= 1/2 + 4/2
= 5/2
RP = 2/5 Ω
Therefore, the equivalent/effective resistance between A and B is 2/5 Ω.
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