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NEET2020PhysicsCurrent ElectricityActual

For the circuit given below, the Kirchhoff's loop rule for the loop B C D E B is given by the equation

Options

  1. A- i 2 R 2 + E 2 - E 3 + i 3 R 1 = 0
  2. Bi 2 R 2 + E 2 - E 3 - i 3 R 1 = 0
  3. Ci 2 R 2 + E 2 + E 3 + i 3 R 1 = 0
  4. D- i 2 R 2 + E 2 + E 3 + i 3 R 1 = 0

Correct answer

B. i 2 R 2 + E 2 - E 3 - i 3 R 1 = 0

Step-by-step solution

Kirchhoff's second law, also known as the Kirchhoff's voltage law (KVL). By Kirchhoff's voltage law the algebraic sum of all the EMF's and potential difference across each resistor is equal to zero it means, in the above circuit, - I 2 R 2 - E 2 + E 3 + I 3 R 1 = 0 ⇒ I 2 R 2 + E 2 - E 3 - I 3 R 1 = 0 .

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