The diagram shows part of a circuit and the currents flowing through it.
What is the potential difference between point P and earth?
90 V90\text{ V}90 V
120 V120\text{ V}120 V
150 V150\text{ V}150 V
180 V180\text{ V}180 V
The diagram shows part of a circuit and the currents flowing through it.
What is the potential difference between point P and earth?
90 V90\text{ V}90 V
120 V120\text{ V}120 V
150 V150\text{ V}150 V
180 V180\text{ V}180 V