Question

Электрический прибор имеет определённую мощность которую указывают на приборе. В таблице приведены примерные значения мощности некоторых приборов. Лампа накаливание-100 Вт Пылесос-1800 Вт Электрочайник-2000 Вт Сколько киловатт - часов "накрутят" эти приборы на электросчетчике за 2 часа в день? Рассчитайте месячный расход в денежном эквиваленте на освещение при тариые 15 тг за кВт*ч.

Answer 1

Объяснение:

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Answer 2

Calculating Power Consumption and Cost

An electric device has a specific power, which is indicated on the device itself. Here are the approximate power values for some devices: - Incandescent Lamp: 100 W - Vacuum Cleaner: 1800 W - Electric Kettle: 2000 W

To calculate the kilowatt-hours "consumed" by these devices on the electric meter in 2 hours per day, we can use the formula:

Energy (kWh) = Power (kW) × Time (h)

For the lamp: Energy (kWh) = (100 W / 1000) kW × 2 h = 0.2 kWh

For the vacuum cleaner: Energy (kWh) = (1800 W / 1000) kW × 2 h = 3.6 kWh

For the electric kettle: Energy (kWh) = (2000 W / 1000) kW × 2 h = 4 kWh

So, in 2 hours per day, the devices will "consume" 0.2 kWh, 3.6 kWh, and 4 kWh, respectively.

Monthly Cost Calculation

Now, let's calculate the monthly cost in monetary terms for lighting at a tariff of 15 tenge per kWh.

For the lamp: Monthly Cost = Energy (kWh) × Tariff = 0.2 kWh × 15 tenge/kWh = 3 tenge

For the vacuum cleaner: Monthly Cost = Energy (kWh) × Tariff = 3.6 kWh × 15 tenge/kWh = 54 tenge

For the electric kettle: Monthly Cost = Energy (kWh) × Tariff = 4 kWh × 15 tenge/kWh = 60 tenge

So, the monthly cost for using these devices for 2 hours per day at a tariff of 15 tenge per kWh will be 3 tenge, 54 tenge, and 60 tenge, respectively.

I hope this helps! If you have further questions or need more assistance, feel free to ask.