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NEET2020PhysicsCurrent ElectricityActual

The equivalent resistance between A and B for the mesh shown in the figure is

Options

  1. A7 . 2   Ω
  2. B16   Ω
  3. C30   Ω
  4. D4 . 8   Ω

Correct answer

B. 16   Ω

Step-by-step solution

When the resistance is connected in series then the formula of equivalent resistance, R = R 1 + R 2 + R 3 + . . . . + R n , but when they are connected in parallel then net resistance is, 1 R = 1 R 1 + 1 R 2 + 1 R 3 + . . . + 1 R n , so in the above diagram the equivalent resistance will be, , in the above branch, resistance are connected in parallel, so new equivalent resistance will be, So, the final resistance will be, R n e t = 4 + 4 + 8   Ω = 16   Ω .

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