Final answer:
Each lamp in the parallel circuit consumes 120 watts of power. This is calculated by dividing the total current by the number of lamps to find the current through one lamp and then using the formula P = V x I.
Step-by-step explanation:
The student has asked about the power consumed at each lamp in a parallel circuit with 4 equal lamps, a total current flow of 4 amperes, and an applied voltage of 120 V. To find the power consumed by each lamp, we need to calculate the power for one lamp.
Since the lamps are in parallel, the voltage across each lamp is the same (120 V). The total current (4 A) is divided equally among the lamps since they are identical, so each lamp has a current of 1 A (4 A / 4 lamps). The power consumed by one lamp is given by the formula P = V x I, where P is power, V is voltage, and I is current.
So, for one lamp: P = 120 V x 1 A = 120 W. Therefore, each lamp consumes 120 watts of power.