equivalent resistance

Asked by TABISH | 21st May, 2012, 08:32: PM

Expert Answer:

When two resistors are in series, you add the elements together. When two elements are in parallel you multiply them and divide that by the sum. ie: parallel elements 7 ohms and 8 ohms (8*7)/(8+7). 

If there are more than 2 in parallel however, just fill in this: 

1/Req=1/R1 + 1/R2 + 1/RN

Req is the final answer of the equivalent resistance. 
Rn means you keep adding the reciprocal of the other resistors in parallel.

Answered by  | 22nd May, 2012, 10:20: AM

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