Final answer:
To determine the energy usage of an electric blanket that uses 235 watts over 6 hours, convert the wattage to kilowatts and multiply by the time. The blanket uses 0.235 kW and over 6 hours this amounts to 1.41 kWh of energy each night.
Step-by-step explanation:
To calculate the energy usage of an electric blanket that uses 235 watts of electricity turned on for 6 hours each night, we need to find out how many kilowatt-hours (kWh) are used. The power consumption in watts has to be converted into kilowatts (kW) by dividing by 1,000, since 1 kW is equal to 1,000 watts. Next, we multiply this value by the number of hours the blanket is on to get the total energy usage in kWh.
The power usage in kilowatts is:
235 watts / 1,000 = 0.235 kW
Now we can calculate the energy used each night:
0.235 kW * 6 hours = 1.41 kWh
Therefore, by using the electric blanket each night for 6 hours, you use 1.41 kWh of energy.
To determine the number of kWh used by using the electric blanket each night, we need to use the formula E = Pt, where E is the energy consumed in kWh, P is the power in kW, and t is the time in hours. In this case, the power of the electric blanket is 235 watts, which is equivalent to 0.235 kW, and the time it is turned on is 6 hours. Plugging these values into the formula, we get:
E = 0.235 kW * 6 hours = 1.41 kWh.
Therefore, using the electric blanket each night consumes approximately 1.41 kWh of electricity.