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JEE Main202120 Jul 2021Evening ShiftPhysicsCurrent ElectricityActual

In the given figure switches S 1 and S 2 are in open condition. The resistance across a b when the switches S 1 and S 2 are closed is ________ Ω .

Correct answer

0

Step-by-step solution

when switch S 1 and S 2 are closed 12 × 6 12 + 6 + 2 + 6 × 12 6 + 12 72 18 + 2 + 72 18 = 4 + 2 + 4 = 10   Ω

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