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MHT CET 2024 (3 May, Shift 1) · Electrical Power & Heating Effect

Electrical Power & Heating Effect question from MHT CET 2024 (3 May, Shift 1)

Q11MHT CET 2024 · 3 MAY · SHIFT 1Medium

Electrical Power & Heating Effect

In the following circuit, a power of 50 watt is absorbed in the section AB of the circuit. The value of resistance ' xx ' is

Figure

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Answer: (c)

  1. Junction rule at B: I=0.5+1+1=2.5 AI = 0.5 + 1 + 1 = 2.5\text{ A}.
  2. Power in AB: P=I2(x+2)P = I^2(x + 2).
  3. 50=(2.5)2(x+2)⇒x+2=850 = (2.5)^2 (x + 2) \Rightarrow x + 2 = 8.
  4. So the answer is (c) x=6 Ωx = 6\ \Omega.
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