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Q.

In the circuit shown in figure, the heat produced in the 5  Ω resistor due to the current flowing through it is 10 cals/s.  The heat generated in the 4  Ω resistor is

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a

1 cal/s

b

2 cal/s

c

3 cal/s

d

4 cal/s

answer is B.

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Detailed Solution

P5=i52R,   P5=i525i4=i52 ⇒  P4 i522  ×  4P4P5=15 ⇒  P4=P55,    P4=104  =  2cal/s

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