Question

In a meter-bridge experiment with resistance R1​ in left gap and resistance X in right gap, null point is obtained at 40 cm from left end. With a resistance R2​ in left gap and same resistance X in right gap, null point is obtained at 60 cm from left end. Where will be null point if R1​ and R2​ are put first in series and then in parallel, in the left gap and right gap still containing X?​

Answer 1

Answer:

In a meter-bridge experiment with resistance R1 in left gap and resistance X in right gap, null point is obtained at 40 cm from left end. With a resistance R2 in left gap and same resistance X in right gap, null point is obtained at 60 cm from left end. Where will be null point if R1 and R2 are put first in series and then in parallel, in the left gap and right gap still containing X?