NEET2024Physics-Electricity
NEET 2024 Physics Power MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Two heaters A and B have power rating of 1 kW and 2 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
1 : 2
B
2 : 3
C
1 : 1
D
2 : 9
Correct Answer
Option D
Detailed Explanation
In series, the power is proportional to the square of the current, and in parallel, it is proportional to the voltage. The ratio of power outputs is (1² + 2²) : (1 + 2)² = 5 : 9.
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