How to find the time if you know the current strength, voltage, work?

Given:

I (Ampere) – current strength;

U (Volt) – voltage of the electrical network;

A (Joule) – work done by electric current for a certain period of time t.

It is required to determine t (second) – a period of time.

Determine the power of the electric current:

W = U * I.

Then, in order to determine the time during which the current completed the work, it is necessary to use the following formula:

W = A / t, from here we find:

t = A / W = A / (U * I).

Answer: the time during which the electric current completed the work will be equal to t = A / (U * I).