1. In lab set up a circuit with a single light bulb. When the voltage was 9 V, the current throughthe bulb was 3 A.
   1. How powerful is the bulb at this moment?
   2. If left the light bulb on for 24 hours, how many seconds is the bulb on for?
   3. How many joules of energy will the bulb use?
   4. Convert this amount of joules to KW*hrs of energy.
   5. If the cost of electricity is $0.09/KW*hr and taxes and fees double the bill, how much does the school district pay for this lab because you and I forgot to turn off the lightbulb?
2. use a 1200 W toaster oven is used to cook a frozen pizza when you get home from school.The pizza takes 13 minutes to cook. 45 times during the school year it is been done.
   1. How many seconds is the toaster oven on during the school year?
   2. How many joules of energy does the toaster oven use throughout the school year?
   3. Convert this amount of joules to KW*hrs of energy.
   4. If the cost of electricity is $0.09/KW*hr and taxes and fees double the bill, how much would you pay?

1. Mrs. Shuchat use the 1800 W blow dryer 2 times a week to dry her hair. This takes 10 minutes every time she does it. There are 52 weeks in a year.
   1. How many seconds is the blow dryer on during the year?
   2. How many joules of energy does the toaster oven use throughout the year?
   3. Convert this amount of joules to KW*hrs of energy.
   4. If the cost of electricity is $0.09/KW*hr and taxes and fees double the bill, how much would you pay?