Two 9V batteries are placed in series If the connecting poin

Two 9V batteries are placed in series. If the connecting point between batteries is ground. What are the other two voltages?

Solution

Given is a ± 9 Vdc power supply :

+9 Vdc terminal is called Power Supply Positive

-9 Vdc terminal is called Power Supply Negative

0 V terminal is called Power Supply Common

maximum potential difference is, of course, 18 V