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Two capacitors R1 = 4\(\Omega\) and R2 = 5\(\Omega\) are connected in parallel across a...

Physics
JAMB 1994
Two capacitors R1 = 4\(\Omega\) and R2 = 5\(\Omega\) are connected in parallel across a potential difference. If P1 and P2 represent power dissipated in R 1 and R2 respectively, then the ratio P1 : P2 is
  • A. 4 : 5
  • B. 5 : 4
  • C. 16 : 25
  • D. 25 : 16
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Correct Answer: Option B
Explanation
P1 = \(\frac{V^2_1}{R_1}\) and P2 = \(\frac{V^2_2}{R_2}\)

P1R1 = P2R2

4P1 = 5P2

\(\frac{p_1}{p_2}\) = \(\frac{5}{4}\)

= 5 : 4
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