Question

Чему равна сила токав проводнике, на концы которого подано напряжение 12в , если за время 5 мин ток совершил работу в проводнике 9 кДж?

Answer 1

A=UIt
U=12
t=5*60=300
A=9000
I=A/It=9000/12*300=2,5
ответ:2,5А.

Answer 2

Calculation of Current

To calculate the current in the conductor, we can use the formula:

Power (P) = Current (I) × Voltage (V) × Time (t)

Given: - Voltage (V) = 12 V - Time (t) = 5 min = 300 s - Work done (W) = 9 kJ = 9000 J

We need to find the current (I).

Rearranging the formula, we have:

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

Substituting the given values, we get:

Current (I) = 9000 J / (12 V × 300 s)

Calculating the value, we find:

Current (I) = 2.5 A

Therefore, the current in the conductor is 2.5 A.

Conclusion

The current in the conductor, when a voltage of 12 V is applied and the conductor performs work of 9 kJ in 5 minutes, is 2.5 A.