Question

какая работа за 5 мин совершается электрическим током в нити лампочки карманного фонаря, если напряжение на лампочке 3,5 В, а сила тока в ней 0,28 А?

Answer 1

A = UIt

A = 3,5B * 0,28A * 300c

A = 294Дж

Answer 2

Calculation of Work Done by Electric Current in the Bulb

To calculate the work done by the electric current in the filament of the pocket flashlight bulb, we can use the formula:

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

In this case, the voltage across the bulb is 3.5 V and the current passing through it is 0.28 A. However, we don't have information about the time for which the current flows. Therefore, we cannot calculate the exact work done without the time component.

If you provide the time for which the current flows, I can help you calculate the work done by the electric current in the bulb.