ANSWER:
2.7*10^4
STEP-BY-STEP EXPLANATION:
We calculate the potential at each point, and then calculate the total potential by adding each one, just like this:
[tex]\begin{gathered} V_a=\frac{k\cdot q_a}{r}=\frac{9\cdot10^9\cdot3\cdot10^{-6}}{2}=1.35\cdot10^4\text{ V} \\ V_b=\frac{k\cdot q_b}{r}=\frac{9\cdot10^9\cdot3\cdot10^{-6}}{2}=1.35\cdot10^4\text{ V} \\ V_T=V_a+V_b \\ V_T=1.35\cdot10^4+1.35\cdot10^4 \\ V_T=2.7\cdot10^4 \end{gathered}[/tex]
The electric potential at point P is 2.7*10^4
