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Questions  

In the circuit shown in the figure the heat produced in the 5ohm resistor due to the current flowing through it is 10cal/sec. The heat produced in 4ohm resistor, in cal/sec, is ___________ 

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detailed solution

2

P=V2RV25=10 (1)V1+V2=V  (2) V14=V263V1=2V2   (3)  From (2)&(1)5V1=2VV1=2V5
 so the heat produced in the 4Ω resistor, P=V124=4V225×14  from (1)V2=10×5=50Volt2 P=V225=125×50=2cal/sec

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