Question

Compare the energy consumption of two commonly used items in the household. calculate the energy used by a 1.20 kw toaster oven, wtoaster, which is used for 6.20 minutes and then calculate the amount of energy an 11.0 w compact fluorescent light (cfl), wlight, bulb uses when left on for 8.50 hours.

Answer 1

Answer: clock radio, toaster, hair dryer, tv, lamp, fridge

Step-by-step explanation:

Just did it

Answer 2

Toaster oven:

Power:
`P=1.20 kW`

Time:
`t=6.20 min \cdot (1)/(60 min/h)=0.103 h`

So, the energy consumed by the oven is

`E=Pt=(1.20 kW)(0.103 h)=0.124 kWh`

Fluorescent light:

Power:
`P=11.0 W=0.011 kW`

Time:
`t=8.50 h`

So, the energy consumed by the light is

`E=Pt=(0.011 kW)(8.50 h)=0.094 kWh`

So, the toaster oven has consumed more energy than the fluorescent light.