Question

рассчитайте расход энергии электрической лампой включенной на 5 мин в сеть напряжением 220 В если сила тока в лампе 0,5 А​

Answer 1

Ответ:

Объяснение:

Дано:

t = 5 мин = 300 c

U = 220 В

I = 0,5 A

______________

Q - ?

Q = U·I·t

Q = 220·0,5·300 = 33 000 Дж

Answer 2

Calculation of Energy Consumption of an Electric Lamp

To calculate the energy consumption of an electric lamp, we need to use the formula:

Energy (in kilowatt-hours) = Power (in kilowatts) × Time (in hours)

Given the following information: - Voltage: 220 V - Current: 0.5 A - Time: 5 minutes

We can calculate the power of the lamp using the formula:

Power (in watts) = Voltage (in volts) × Current (in amperes)

Let's calculate the power first:

Power = 220 V × 0.5 A = 110 W.

Now, let's convert the time from minutes to hours:

Time = 5 minutes ÷ 60 = 0.0833 hours.

Finally, we can calculate the energy consumption:

Energy = Power × Time = 110 W × 0.0833 hours = 9.165 W·h.

Therefore, the energy consumption of the electric lamp, when connected to a 220 V power supply for 5 minutes, is approximately 9.165 watt-hours.

Please note that the above calculation assumes that the power factor of the lamp is 1 (unity power factor). If the power factor is different, the calculation may vary. However, since the power factor is not provided in the question, we will assume a power factor of 1 for simplicity.

I hope this helps! Let me know if you have any further questions.