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  4. The resistive network shown below is connected to a D.C. source of 16V. The power consumed by the network is 4 Watt. The value of R is :

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Q. The resistive network shown below is connected to a $D.C.$ source of $16V$. The power consumed by the network is $4$ Watt. The value of $R$ is :Physics Question Image

JEE MainJEE Main 2019Current Electricity

Solution:

$P = \frac{16^{2}}{8R} =4 \therefore R = 8\Omega$

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