Question

при нормальном режиме работы тостера сила тока в его электрической цепи равна 6 А. Напряжение в сети 220 В. Найдите работу электрического тока за 5 мин

Answer 1

A=IUt=6*220*300=396000Дж=396кДж

Answer 2

А=IUt=6*220*5*60=396000 Дж (не забываем переводить минуты в секунды)

вот такое решение, можно еще записать 396*10^3 Дж

Answer 3

Calculation of Electrical Work

To calculate the electrical work done by the toaster in 5 minutes, we need to know the power consumed by the toaster. The power can be calculated using the formula:

Power (P) = Current (I) × Voltage (V)

Given that the current in the electric circuit of the toaster is 6 A and the voltage in the power supply is 220 V, we can calculate the power as follows:

Power (P) = 6 A × 220 V = 1320 W The unit of power is watts (W).

To calculate the electrical work, we need to convert the time from minutes to seconds, as the unit of power is watts (W) and the unit of time is seconds (s). There are 60 seconds in a minute, so 5 minutes is equal to 300 seconds.

Work (W) = Power (P) × Time (t)

Work (W) = 1320 W × 300 s = 396,000 J

Therefore, the electrical work done by the toaster in 5 minutes is 396,000 joules (J).