Question

Какую работу совершает электрический ток в электродвигателе за 30 минут если сила тока в цепи 0.5А,а напряжение на клеммах двигателя 12 В???

Answer 1

P = A / t -------------------> A = P * t 

P - мощность 
t - время ( 30 мин = 0,5 ч ) 

P = U * I 

U - напряжение ( 12 В ) 
I - сила тока ( 0,5 A ) 

P = 12 * 0,5 = 6 Bт

A = P * t = 6 * 0,5 = 3 Дж 

Answer 2

Calculating the Work Done by Electric Current in an Electric Motor

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

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

Given: - Current (I) = 0.5 A - Voltage (V) = 12 V - Time (t) = 30 minutes = 30 × 60 seconds = 1800 seconds

Calculating the Work Done

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

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

Work (W) = 12 V × 0.5 A × 1800 s

Work (W) = 6 J/s × 1800 s

Work (W) = 10800 J

Therefore, the electric current in the electric motor does 10800 joules of work in 30 minutes.