Question

please
answer needed asap.​

Answer 1

I hope this helps........

Answer 2

We know that -

➩ Parallel Combination

❏ $\color{darkblue}\boxed{\sf \dfrac{1}{R_{eff}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}....so\:on}$

And

➩ Series Combination

❏ $\color{darkblue}\boxed{\sf R_{eff}=R_1+R_2+R_3...so\:on}$

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Here in this question -

STEP 1 :

Lower 3 resistors are in series combination so ,

$\implies{\sf R_{eq}=2+2+2}$

$\color{orange}\implies{\sf R_{eq}=6Ω}$

STEP 2 :

Upper 3 resistors are in series

$\implies{\sf R_{eq}=1+1+1 }$

$\color{orange}\implies{\sf R_{eq}=3Ω}$

STEP 3 :

Now they are in Parallel Combination

$\implies{\sf \dfrac{1}{R_{eq}}=\dfrac{1}{3}+\dfrac{1}{2}+\dfrac{1}{6} }$

$\implies{\sf \dfrac{1}{R_{eq}}=\dfrac{36}{36}}$

$\color{orange}\implies{\sf R_{eq}=1Ω }$

STEP 3 :

They are now in series combination

$\implies{\sf R_{eq}=1+1+1 }$

$\color{red}\implies{\sf R_{eq}=3Ω }$

$\color{darkblue}\underline{\underline{\sf Answer-}}$

Equivalent resistance between point A and B is $\color{red}{\sf 3Ω}$