Question

ФИЗИКА!!8 класс!!какую работу совершает эл.ток в электродвигателе за 40 мин,если сила тока в цепи 0,5 А,а напряжение на клеммах двигателя 14 В? найдите мощность двигателя

Answer 1

A=IUt=0,5*14*2400=16800 Дж

Answer 2

Calculating the Work Done by Electric Current in the Motor

To calculate the work done by the electric current in the motor, we can use the formula:

Work (W) = Voltage (V) × Current (I) × Time (t)

Given: - Current (I) = 0.5 A - Voltage (V) = 14 V - Time (t) = 40 min = 2400 s

Using the given values, we can calculate the work done by the electric current in the motor.

Work (W) = 14 V × 0.5 A × 2400 s

Calculating the Power of the Motor

The power of the motor can be calculated using the formula:

Power (P) = Work (W) / Time (t)

Given: - Time (t) = 2400 s (converted from 40 min)

Using the previously calculated work, we can now find the power of the motor.

Power (P) = Work (W) / 2400 s

Let's calculate the work done by the electric current in the motor and the power of the motor.