Questions:

Figure 1.

1. Your engineering manager tells you he needs a 350-ohm Wheatstone bridge (Figure 1). You deliver a bridge with which of the following characteristics?

A. Each element (R) has a value of 350 ohms.
B. The input resistance as seen by the source is 350 ohms.
C. The output resistance as seen by the amplifier's input stage is 350 ohms.

Figure 2.

2. An electrical engineer sells his options and moves to a flat in SoHo and become a conceptual artist. He makes sculptures from his old electrical parts. He creates a cube made of 12 1K-ohm resistors which he names "Black-brown-red in 3D." But once an EE, always an EE and he can't resist pondering:

What is the resistance from one vertex of the cube to the vertex diagonally opposite (points A and B in Figure 2)?

— Contributed by Abhijit Ray.

Answer