When an electric heater is connected to the lighting circuit, the heat generated per minute is 3.3 * 10 to the fourth power J. how to calculate the current passing through the electric heater?

When an electric heater is connected to the lighting circuit, the heat generated per minute is 3.3 * 10 to the fourth power J. how to calculate the current passing through the electric heater?

P=33000/60=550J/S
U=220V
P=UI
I=P/U=550/220=2.5A