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JEE Main20204 Sep 2020Evening ShiftPhysicsCurrent ElectricityActual

The value of current i 1 flowing from A to C in the circuit diagram is :

Options

  1. A5   A
  2. B2 . 25   A
  3. C0 . 75   A
  4. D1   A

Correct answer

D. 1   A

Step-by-step solution

The Diagram shown in the question represents the balanced wheatstone bridge. It satisfy the condition of balanced wheat stone bridge. Multiplication of dimensionally opposite resistance is same. 2 × 2 = 2 × 2 ⇒ 4 = 4 When the circuit is balanced wheat stone bridge then current through the branch B D is zero, so it can be removed. Now, after removing B D wire voltage across A C is 8   V . So, current will be, i 2 = 8 4 + 4 = 1   A

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