Respuesta :
Answer:
4.5V
Explanation:
For different batteries connected in series the voltage is given by:
[tex]V_T=V_1+V_2+...+V_n[/tex]
for n=3 you have:
[tex]V_T=V_1+V_2+V_3\\\\V_1=V_2=V_3=1.5V\\\\V_T=1.5V+1.5V+1.5V=4.5V[/tex]
hence, the output voltage is 4.5V