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NEET2024PhysicsMotion in One DimensionActual

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:

Options

  1. A2:9
  2. B1:2
  3. C2:3
  4. D1:1

Correct answer

A. 2:9

Step-by-step solution

aligned & Power Consumed =P= V^2 R & P_A P_B = R_B R_A & R_A=2 R_B aligned For Series Combination P_S= V^2 3 R_B For Parallel Combination aligned & P_P= 3 V^2 2 R_B & P_S P_P = 2 9 aligned

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