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ilka2004z
15.06.2020 03:19
Физика
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1 1200 W, 2000 W and 720 W devices will be operated on 220 V at the same time. Calculate the current through each device.

2. A vacuum cleaner of power rating 1440 Watt operates on 240 V. What is the correct current of fuse in the circuit used to operate this machine?

3. The power rating of a kettle is 1200 W. If the kettle draws 5 A, what is the operation voltage of the kettle?

4 If an electrical device dissipates 1800 J in 5 minutes, what is the power of the device?​

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hehsggsvsg
4,5(50 оценок)
1)90*(30: 60)=45(км)-проехал за полчаса 2)90*(15: 60)=22,5(км)-проехал за 15мин. 3)90*(1: 60)=1,5(км)-проехал за 1мин.

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