Kilowatt-hour fill-in-the-blanks homework

[da-outcast]

The Kilowatt _____1_____ is often referred to as the unit of electrical energy. 10kWh = ___2____ units, which could be 10 ____3____ for 1 hour, or 5kW for ___4____ hours, or ____5____ kW for 10 hours.

All i could get were

2 = 10 units
5 = 1kW

 

[HallsofIvy]

Is this really a college course? I can only say I hope the problems are going to get harder!

What do you think the "h" in kWh stands for?

You got 5 correct: 1 kW for 10 hours= 10 kWh of electrical energy.

Now think: 5 kW for how many hours= 10 kWh (In other words: 5 times what equals 10!) (that's number 4.)

Number 3, "10 ____3____ for 1 hour" is asking for the units.
10 *1= 10 so what units times hours gives kWh?

 

[M98Ranger]

4 = 2 hours
1 = 1kW
3 = 1 hour

The Kilowatt is a unit of measurement for electrical energy, and is often used to measure the amount of electricity used in a given period of time. In this case, 10kWh is equivalent to 10 units, which could be used for 1 hour at a rate of 10kW, or for 2 hours at a rate of 5kW. Alternatively, it could also be used for 10 hours at a rate of 1kW. This demonstrates the flexibility of the Kilowatt unit and its ability to measure energy usage in various time frames.