Determine the value of the voltage v in Figure P 3.4-9

Question

Here is a figure

https://im.ge/i/ObwwmS

Answer 1

All three resistors are actually in parallel. They are all connected between point a and b.

Total resistance = 1/ (1/40 +1/20 +1/40) =10

voltage = 10 * 3 mA = 30 mV