Question

solve the question given in the pic...​

Answer 1

Answer:

$\huge\star\underbrace{\mathtt\red{⫷❥ᴀ᭄} \mathtt\green{n~ }\mathtt\blue{ §} \mathtt\purple{₩}\mathtt\orange{Σ} \mathtt\pink{R⫸}}\star\:$

Explanation:

☆As the above figure is a Wheatstone bridge.

And a special balanced condition for Wheatstone bridge is when the Resistance are proportional then the middle resistance is cancelled out.

=>R/R=R/R

=>1=1

=>LHS=RHS.

So the resistance are proportional hence the 2R resistor gets cancelled out.

☞Now the R and R resistors are in series and parallel to the lower one.

=>So R+R=2R.

=>R+R=2R.

These 2R resistors are parallel.

So R effective=(2Rx2R)/2R+2R

=4R^2/4R

=R^2/R

=R.

☞So the equivalent resistance of the circuit is R, hence option a) R is the correct answer.

HOPE IT HELPS.