1. Topic 8: Charges and Circuits Electric Power, Costs and More
Day 54
Topic 8: Charges and Circuits
Electric Power, Costs and More

2. Brunch of Champions…

3. A heater, when hooked up to 120 volts, has 11 amps flowing into it
A heater, when hooked up to 120 volts, has 11 amps flowing into it. You keep it on for 8 hours. If BGE charges 15 cents per KwHr…how much will it cost to run?
1) Since this is a money situation, what units do we want for Energy?

4. A heater, when hooked up to 120 volts, has 11 amps flowing into it
A heater, when hooked up to 120 volts, has 11 amps flowing into it. You keep it on for 8 hours. If BGE charges 15 cents per KwHr…how much will it cost to run?
1I) Come up with a plan to get to energy. Detail it!

5. Get Power from P=IV Turn Power into KW Get Energy from E = P*t
A heater, when hooked up to 120 volts, has 11 amps flowing into it. You keep it on for 8 hours. If BGE charges 15 cents per KwHr…how much will it cost to run?
Get Power from P=IV
Turn Power into KW
Get Energy from E = P*t
Multiply by the cost

6. For the next bit… I brought devices in for us to look at.
You will be looking at each device for information to help you determine the cost
For example, lets try the 1st one..

9. Now for some work
Lets try a few in order to understand what is expected from you