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Two resistors of resistance, 100 Ω and 200 Ω are connected in parallel in an electric circuit. The ratio of the thermal energy developed in 100 Ω to that in 200 Ω in a given time is
In a parallel circuit, power P = V²/R. Since both resistors have the same voltage, the thermal energy ratio is inversely proportional to resistance.
Thus, E100Ω : E 200Ω = 200 : 100 = 2:1. Answer: (b) 2:1.
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