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NEET2009PhysicsCurrent ElectricityActual

See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it?

Options

  1. A₁- (i₁+i₂ ) R+i₁ r₁=0
  2. B₁- (i₁+i₂ ) R-i₁ r₁=0
  3. C₂-i₁ r ₂- ₁- i ₁ r ₁=0
  4. D- ₂- (i₁+i₂ ) R+i₂ r₂=0

Correct answer

B. ₁- (i₁+i₂ ) R-i₁ r₁=0

Step-by-step solution

For loop (3) E₁- (i₁+i₂ ) R-i₁ r₁=0 For loop (4) - E ₁+ i ₁ r ₁- i ₂ r ₂+ E ₂=0 For loop (1) E₂- (i₁+i₂ ) R-i₂ r₂=0

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