A balanced Wheatstone bridge consists of an R V of 3,500 , an R 2 of 200 , and an R 3 of 680 . The value of R UNK is

A balanced Wheatstone bridge consists of an R V of 3,500 , an R 2 of 2

1.	A balanced Wheatstone bridge consists of an R V of 3,500 , an R 2 of 200 , and an R 3 of 680 . The value of R UNK is
A.	680
B.	1,029
C.	200
D.	880
Answer» C. 200