Two capacitors $R_1 = 4\,\Omega$ and $R_2 = 5\,\Omega$ are connected in parallel across a potential difference. If $P_1$ and $P_2$ represent power d...

Assessment: JAMB UTME - Physics - 1994 Subject: Physics

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Two capacitors $R_1 = 4\,\Omega$ and $R_2 = 5\,\Omega$ are connected in parallel across a potential difference. If $P_1$ and $P_2$ represent power dissipated in $R_1$ and $R_2$ respectively, then the ratio $P_1 : P_2$ is

4 : 5

5 : 4

16 : 25

25 : 16

Answer Details

P1 = $\frac{V_{1}^{2}}{R_{1}}$ 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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Capacitors

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Two capacitors \(R_1 = 4\,\Omega\) and \(R_2 = 5\,\Omega\) are connected in parallel across a potential difference. If \(P_1\) and \(P_2\) represent power d...

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