Assertion (A) : A circular wire has resistance R. Then its resistance between two diametrically opposite points will be R/4.
Reason (R) : The two semicircular portions each form a parallel combination.
Answer & explanation
Correct answer: option 1
A circular wire has resistance R. Then its resistance between two diametrically opposite points will be R/4 because the two semicircular portions each form a parallel combination.