GATE 2016 EE (SET 1) Q17

17. In the portion of a circuit shown, if the heat generated in 5\Omega resistance is 10 calories per second, then heat generated by the 4\Omegaresistance, in calories per second, is _________.

Solution:

 

\left ( 2I \right )^{2}\times 5=10

I_{2}=10\setminus 5\chi 4

I^{2}\chi 4=0.5\chi 4=2cal\setminus sec

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