In the shop wiring, five lamps are connected in parallel. Each with a resistance of 120 Ohm

In the shop wiring, five lamps are connected in parallel. Each with a resistance of 120 Ohm, determine the current strength of the current along the common line if the voltage in the network is 220 V.

Initial data: n (number of lamps connected in parallel) = 5 lamps; R1 (resistance value of each lamp) = 120 Ohm; U (mains voltage) = 220 V.

1) Determine the resistance in the common line of five parallel-connected lamps: R = R1 / n = 120/5 = 24 Ohm.

2) We calculate the current in the line: I = U / R = 220/24 ≈ 9.2 A.

Answer: The current in the common line is 9.2 A.