Hello!
The answer is: The voltage is 5400 Volts.
Why?
We can calculate the voltage using the Ohm's Law.
The Ohm'ws Law states that:
![V=I*R](https://img.qammunity.org/2020/formulas/physics/middle-school/hr87cv5df5aa7qlz2n36ekuedtj4vxn3wm.png)
Where,
V, is the voltage in volts
I, is the current in amps
R, is the resistance in ohms
We are given:
![R=45ohms\\I=120Amps](https://img.qammunity.org/2020/formulas/physics/middle-school/qcr0hnt8ywtn4qzphbeofpdfv7xvgu89yk.png)
Now, calculating the voltage, we have:
![V=I*R=45ohms*120Amps=5400Volts](https://img.qammunity.org/2020/formulas/physics/middle-school/1awzgi165ki02150nwsbmkcksz9oug9vvi.png)
Hence, the voltage is 5400 Volts.
We can also calculate the power using the following formula:
![P=V*I](https://img.qammunity.org/2020/formulas/physics/middle-school/in6w6c8qnacvsyho8sdasaw5td3kcppme2.png)
Where,
P, is the power in watts
V, is the voltage in volts
I, is the current in amps
So,
![P=5400Volts*120Amps=648000W](https://img.qammunity.org/2020/formulas/physics/middle-school/46tp96s5t2lqtj4u9os7rvh0299rhmokx4.png)
Have a nice day!