Question

Find equivalent resistance between X and Y:-

Answer 1

Part C is the correct answer...

hope this answer will be helpful ♥️♥️

Answer 2

Answer:

Calculating seperately the equivalent resistances,

$$ R^{}_{IH} = \dfrac{30}{3} = 10 \Omega $$ (Parallel resistors of equal resistance)

$$ R^{}_{CD} = R^{}_{GF} = 0 $$ (Short circuit)

Now,we can directly calculate

1) $$ R^{}_{IF} = R^{}_{IH} + R^{}_{HG} + R^{}_{GF} $$ (Series connection)

$$ \implies R^{}_{IF} = 10 + 20 = 30 \Omega $$

2) $$ R^{}_{AE} = R^{}_{AB} + R^{}_{BC} + R^{}_{CD} $$ (Series connection)

$$ \implies R^{}_{AE} = 10 + 20 = 30 \Omega $$

Now,

$$ R^{}_{XY} = \dfrac{R^{}_{AE} \times R^{}_{IF}}{R^{}_{AE} + R^{}_{IF}} \implies R^{}_{XY} = 15 \Omega $$

Explanation: