Answer:
Thus, the potential difference is 119 V.
Explanation:
Current, I = 4.2 A
Power, P = 500 W
The rate of doing work is called power.
The SI unit of power is Watt.
The  commercial unit of power is horse power.
1 horse power = 746 Watt
The formula of the electrical power is
P = V I
where, V is the voltage and I is the current.
Substitute the values in the formula
500 = 4.2 x V
V = 119 V
