Question

Solved examples of resistors in parallel
Resistors having resistances of 15 ohms 20ohms and 10ohms are connected in
parallel. What is the effective resistance in the circuit?
Given : R = 15, R, = 20 and R = 10
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Answer 1

Answer:

1/R=1/R1+1/R2+1/R3

1/R=1/15+1/20+1/10

1/R=1/5(1/3+1/4+1/2)

1/R=1/5(13/12)

1/R=13/60

Reff=60/13