Question

find efficient resistance
in a circuit there are three parallel resistors of 4, 6 and 12 ohms. ​

Answer 1

Answer:

it is in parallel circuit

1/ Rp = 1/r1 +1/r2+1/r3

1/4 + 1/6 + 1/ 12 = 2 ohms = Rp

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Answer 2

Answer:

1/4 + 1/6 +1/12 = 3 ohms

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