Question

00 Sprint 8:27 PM Find the equivalent resistance between points A and B shown in the figure(Figure 1) Consider R1-1.9 Ω , R2 = 1.3 Ω , R3- 2.1Ω,R4 = 3.4 Ω , R5 = 4.5 Ω , and R6 = 6.0 Ω . Express your answer using two significant figures. I got 1.43 omhs but its says its wrong
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Answer #1

here R3,R4 and R5 are connected in parallel.

1/R345 = 1/R3 + 1/R4 + 1/R5

= 1/2.1 + 1/3.4 + 1/4.5

R345 = 1.01 ohm

this comination is in series with R6.

R3456 = R345 + R6

= 1.01 + 6

= 7.01 ohms
this combination is in parallel with R1 and R2.

1/R123456 = 1/R1 + 1/R2 + 1/R3456

= 1/1.9 + 1/1.3 + 1/7.01

Rnet = R123456 = 0.695 ohm <<<<<<<<<<----------------------Answer

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