The resistance of the filament of the electric lamp is 144 ohms, the voltage across the lamp is 120 V.

The resistance of the filament of the electric lamp is 144 ohms, the voltage across the lamp is 120 V. Determine the amperage in the lamp, power consumption and power consumption for 10 hours of lamp operation?

To begin with, we will determine the current strength. We will express the current strength through the formula R = U / I. Then I = U / R, where U is the voltage and R is the resistance.
I = 120/144 = 0.83 A.
Now we find the power by the formula P = IU.
P = 0.83 * 120 = 99.9 W.
And at the end we will find the power consumption by the formula E = Pt, where t is the time.
E = 99.9 * 10 = 999 W * h.