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If power dissipated in the 9 Ω resistor in the circuit shown is 36 W, the potential difference across the 2 Ω resistor is
  • a)
    4 V
  • b)
    8 V
  • c)
    2 V
  • d)
    10 V
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
If power dissipated in the 9 Ω resistor in the circuit shown is 36 W,...
We have,
Current passing through the 9 Ω resistor is
The 9 Ω and 6 Ω resistors are in parallel, therefore
where i is the current delivered by the battery.
Therefore,
Thus, the potential difference across the 2 Ω resistor is
V = iRV = iR = 5 × 2 = 5 × 2 = 10 V
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Community Answer
If power dissipated in the 9 Ω resistor in the circuit shown is 36 W,...
We have,
Current passing through the 9 Ω resistor is
The 9 Ω and 6 Ω resistors are in parallel, therefore
where i is the current delivered by the battery.
Therefore,
Thus, the potential difference across the 2 Ω resistor is
V = iRV = iR = 5 × 2 = 5 × 2 = 10 V
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