What kind of work does the electric current do in the electric motor of the vacuum cleaner in 0.5
July 3, 2021 | education
| What kind of work does the electric current do in the electric motor of the vacuum cleaner in 0.5 hours of work if the vacuum cleaner is connected to a city network with a voltage of 220V and the current strength in the network is 0.5A?
Given: t (duration of the vacuum cleaner) = 0.5 h (in the SI system t = 1800 s); U (voltage in the city network) = 220 V; I (current in the network) = 0.5 A.
The work done by the current in the electric motor of the vacuum cleaner is calculated using the Joule-Lenz law: A = U * I * t.
Let’s make a calculation: A = 220 * 0.5 * 1800 = 198 * 10 ^ 3 J (198 kJ).
Answer: In the electric motor of the vacuum cleaner, the current has done work of 198 kJ.
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