Question

Сколько электроэнергии будет израсходовано за 30 минут работы электроплиты, включёной в сеть напряжением 220 вольт при силе тока 5 ампер

Answer 1

A=UIt=220B*5A*1800c=1980000Дж=1.9МДж

Answer 2

Calculating Power Consumption of an Electric Stove

To calculate the amount of electrical energy consumed by an electric stove, we can use the formula:

Power (P) = Voltage (V) × Current (I)

Given: - Voltage (V) = 220 volts - Current (I) = 5 amperes - Time (t) = 30 minutes

First, we need to convert the time from minutes to hours: Time (t) = 30 minutes = 30 ÷ 60 hours = 0.5 hours

Now, we can calculate the power consumed by the electric stove using the given voltage and current: Power (P) = 220 volts × 5 amperes = 1100 watts

Calculating Energy Consumption

To find the total energy consumed, we can use the formula:

Energy (E) = Power (P) × Time (t)

Substituting the values we have: Energy (E) = 1100 watts × 0.5 hours = 550 watt-hours

Therefore, the electric stove will consume 550 watt-hours of electrical energy in 30 minutes of operation when connected to a 220-volt power supply with a current of 5 amperes.