Two technicians are testing a series circuit and took the following voltage measurements: V1=12.0V; V2=12.0V; V3=0.0V; V4=0.0V. Technician A states that this could indicate an open in the switch. Technician B states that this is normal operation. What can be concluded from the voltage measurements?
1) There is an open in the switch
2) This is normal operation
3) The circuit is shorted
4) The voltage measurements are incorrect