1/R = 1/R1+ 1/R2 - Parallel Resistors

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SUMMARY

The forum discussion centers on the formula for calculating equivalent resistance in parallel circuits, specifically using the equation 1/R = 1/R1 + 1/R2. Participants clarify the arrangement of resistors in a circuit, noting that resistors in rectangles 2 and 3 are in parallel with the resistor in rectangle 1. The equivalent resistance is derived using the formula RAB = [(R + RL) // R] + R, where RL is specified as 542 ohms. This discussion emphasizes the importance of accurately identifying resistor configurations in circuit analysis.

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http://img42.imageshack.us/img42/1774/67916352.png [/URL]
1/R = 1/R1+ 1/R2 - Parallel Resistors
3. I thought it was 1048 but that was just because I thought 542*2 I really had no idea how to work this
 
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Resistors in Rectabgle 3 are in parallel with that in rectangle 2 and the parallel combination are in series with rectangle 1:

http://img34.imageshack.us/img34/1774/67916352.png


RAB = [(R + RL) // R] + R = RL = 542

SO,

[(R + 542) * R / (R + R +542)] + R = 542
 
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