Question

Assertion : The equivalent resistance between the points X and Y in the figure is 10.
Reason : According to Wheatstone bridge, points A and C have the same potential.

• A. Both (A) and (R) are true and (R) is the correct explanation of A
• B. Both (A) and (R) are true but (R) is not the correct explanation of A
• C. (A) is true but (R) is false
• D. (A) is false but (R) is true

Answer 1

The correct option is B Both (A) and (R) are true but (R) is not the correct explanation of A

Simplified circuit:

$R_{xy}=\frac{20\times 20}{2\times 20}=10\Omega$

According to Wheatstone condition, A and C are of same potential.

But solving for $R_{xy}$ and Wheatstone condition are not related.