Question

В проводнике за 5 мин при силе тока 5 А электрическим током совершается работа 60 кДж. Напряжение при этом равно?

Answer 1

t= 600 c                   А=I*U*t ;   U=A/I*t ;  U= 60000 Дж/5 А*300 с=40 В 
I= 5 A
A= 60000 Дж
U- ?                           Ответ: 40 В

Answer 2

Calculating Voltage from Work and Time

To calculate the voltage when a current of 5 A does 60 kJ of work in 5 minutes, we can use the formula:

Voltage (V) = Work (W) / (Current (I) * Time (t))

Given: - Work (W) = 60 kJ = 60,000 J - Current (I) = 5 A - Time (t) = 5 minutes = 300 seconds

Using the formula, we can calculate the voltage:

V = W / (I * t)

V = 60,000 J / (5 A * 300 s)

V = 60,000 J / 1500 C

V = 40 V

So, the voltage when a current of 5 A does 60 kJ of work in 5 minutes is 40 volts.