Question

В проводнике с силой тока 2 А ток за 5 с совершает работу 100 Дж.Чему равно напряжение на концах проволоки?

Answer 1

Дано:
I = 2 A
t = 5 c
A = 100 Дж
Найти:
U - ?
Решение:
I=q/t. q=It = 2*5=10 (Кл)
U=A/q = 100 / 10 = 10 (В)

Ответ: U=10 В

Answer 2

Calculation of Voltage

To calculate the voltage across a wire, we can use the formula:

Voltage (V) = Work (W) / Charge (Q)

In this case, the work done is given as 100 J and the current is 2 A. The charge can be calculated using the formula:

Charge (Q) = Current (I) * Time (t)

Given that the current is 2 A and the time is 5 s, we can calculate the charge:

Q = 2 A * 5 s = 10 C

Now, we can substitute the values into the voltage formula:

V = 100 J / 10 C = 10 V

Therefore, the voltage across the wire is 10 volts.