Four resistors A, B, C and D form a Wheatstone bridge as shown in the figure. The bridge is balanced when C=100 . If A and B are interchanged, the bridge balances for C=121 . The value of D is

Step-by-step solution

According to the question, balanced wheat stone bridge, can be shows as follows First case when, C=100 Now, By balanced wheat stone bridge, Second case when, C=121 R_B R_A = 121 R From Eqs. (i) and (ii), we get aligned R & = 100 121 R & =110 aligned