NEET · Physics · STD 12 - 3. current electricity
Two heaters \(A\) and \(B\) have power rating of \(1 \mathrm{~kW}\) and \(2 \mathrm{~kW}\), respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is:
- A \(2: 9\)
- B \(1: 2\)
- C \(2: 3\)
- D \(1: 1\)
Answer & Solution
Correct Answer
(A) \(2: 9\)
Step-by-step Solution
Detailed explanation
Power Consumed \(=P=\frac{V^2}{R}\) \(\frac{P_A}{P_B}=\frac{R_B}{R_A}\)
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