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If power dissipated in the 9-Ω resistor in the circuit shown is 36 watt, the potential difference across the 2-Ω resistor is [2011]
  • a)
    4 volt
  • b)
    8 volt
  • c)
    10 volt
  • d)
    2 volt
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If power dissipated in the 9-Ω resistor in the circuit shown is ...
We have, 
Current passing through the 9Ω resistor is
The 9Ω and 6Ω resistors are in parallel,
therefore
where i is the current delivered by the
battery.
Thus, potential difference across 2Ω
resistor is
V = iR
= 5 × 2
= 10V
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If power dissipated in the 9-Ω resistor in the circuit shown is 36 watt, the potential difference across the 2-Ω resistor is [2011]a)4 voltb)8 voltc)10 voltd)2 voltCorrect answer is option 'C'. Can you explain this answer?
Question Description
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