When 50 V is applied to four series resistors, 100 µA flows. If R1 = 12 k , R2 = 47 k, and R3 = 57 k, what is the value of R4?

When 50 V is applied to four series resistors, 100 µA flows. If R1 =

1.	When 50 V is applied to four series resistors, 100 µA flows. If R1 = 12 k , R2 = 47 k, and R3 = 57 k, what is the value of R4?
A.	38.4 k
B.	3.84 k
C.	384 k
D.	3.84 M
Answer» D. 3.84 M