A summing amp has the following values: R1 = R2 = 1.1 k, R3 = 2.2 ...

[littleanan]

A summing amp has the following values: R1 = R2 = 1.1 k, R3 = 2.2 k, Rf = 3.3 k, V1 = V2 = 2 V, V3 = -4 V. The output of this circuit is
 
  A) 9.33 V B) 12 V C) 21.3 V D) -6 V

Question 2

Most digital circuits represent binary values using ________.
 
  A) 0 V and +5 V B) -12 V and +12 V C) -5 V and +5 V D) -5 V and 0 V

[momolu]

Answer to Question 1

D

Answer to Question 2

A