When two resistances R₁ and R₂ are connected in series, they consume 12 W power. When they are connected in parallel, they consume 50 W power. What is the ratio of the Power of R₁ and R₂?

Let P₁ and P₂ be powers across R₁ and R₂. In series, power is divided inversely as resistance. In parallel, power is directly proportional to conductance. Using given conditions and solving equations, the ratio P₁ /P₂ = 4. Answer: (b) 4.

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