Question

Calculate the total [equivalent resistance] when two resistance of 3 ohms and 6 ohms are connected in parallel.

Answer 1

Answer:

Total equivalent resistance = 2Ω

Explanation:

Let the resistances be R₁, R₂

            equivalent resistance be Rₙ

We know that when resistors are connected in parallel,

1 / Rₙ = 1/R₁ + 1/R₂

Given that,

R₁ = 3Ω

R₂ = 6Ω

Putting these values in we get,

1/Rₙ = 1/3 + 1/6

1/Rₙ = (2 + 1)/6

1/Rₙ = 3/6 = 1/2

Rₙ = 2Ω

Answer 2

R effective is R1*R2/R1+R2