Correct Answer: Option A

Explanation

Power = IV = I²R = ^V2/_R
In terms of e.m.f E, of a cell we have
IE = I²R = E²/R
∴P₁ = ^E2/_R; P₂ = ^E2/_R2/^E2/_R2
= ^E2/_R1 x ^R₂/_E² = ^R₂/_R1
∴^P₁/_P2 = ^R₂/_R1

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