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AP EAMCET2014PhysicsCurrent Electricity

In the circuit shown, the heat produced in 5 resistance due to current through is 50 ~J / s . Then, the heat generated per second in 2 resistance is

Options

  1. A5 ~J / s
  2. B4 ~J / s
  3. C9 ~J / s
  4. D10 ~J / s

Correct answer

A. 5 ~J / s

Step-by-step solution

The given P=50 ~J / s P=V i P=i^2 R aligned i₂^2 & = P R = 50 5 =10 Amp ^2 V & .=i₂ R_ (5 ) & = 10 5= 250 ~V aligned and 2 and 8 are in series. So, the required resistance aligned & =2 +8 =10 i₁ & = V R_ (10 ) i₁ & = 250 10 ~A aligned The heat generated/second in 2 aligned P=V i₁ & & =i₁^2 R & = ( 250 10 )^2 2 & = 250 100 2= 25 10 2= 25 5 =5 ~J / s aligned

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