Big Amperage 6 St. Volta Ohms and Wattcrawler The Hunger Games: Ohmer To ElectricJay Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Final Jeopardy $100 Question from Big Amperage 6 A ____________ is a charge that is not moving Main Board Answer $100 Answer from Big Amperage 6 Static Main Board $200 Question from Big Amperage 6 What unit is used to measure current (Shortened and Long Version)? Main Board Answer $200 Answer from Big Amperage 6 Amps or Amperes Main Board $300 Question from Big Amperage 6 When Current ____, Voltage ___ When Voltage ___ , Main Board Current ___ Answer $300 Answer from Big Amperage 6 When Current ▲, Voltage ▲ When Voltage ▼ , Main Board Current ▼ $400 Question from Big Amperage 6 When current can pass through both a thin wire and a thicker wire, which would have less resistance? Why? Main Board Answer $400 Answer from Big Amperage 6 Big wire, means the larger space, the more current we can have Main Board $500 Question from Big Amperage 6 Fill in the Blanks: When Amperage ___ then Resistance _____ PROVE IT MATHEMATICALLY Main Board Answer $500 Answer from Big Amperage 6 When Amperage increases then Resistance decreases and Vice Versa Main Board $100 Question from St. Volta The unit of measure for Voltage is _____________ Main Board Answer $100 Answer from St. Volta Volts Main Board $200 Question from St. Volta An Electric Circuit must be __________ to work. Main Board Answer $200 Answer from St. Volta Complete Main Board $300 Question from St. Volta A ______________ is required for Voltage to carry a current in a circuit. Main Board Answer $300 Answer from St. Volta Voltage Source Main Board $400 Question from St. Volta How is Voltage SIMILAR to a rollercoaster? Main Board Answer $400 Answer from St. Volta High potential energy from the top, lower as it goes down - Electricity has high potential at the Power Plant, moves away from high concentration Main Board $500 Question from St. Volta Main Board Answer $500 Answer from St. Volta A. 12 Volts for both B. 4 Ohms and 2 Ohms C. 3 amps and 6 amps on each branch Main Board $100 Question fromOhms and Ohmer To This is the unit of measure for Resistance, and it's Symbol. Main Board Answer $100 Answer fromOhms and Ohmer To Ohm’s and Ω Main Board $200 Question fromOhms and Ohmer To Something with a ___________ resistance will not allow charges to flow easily. Main Board Answer $200 Answer fromOhms and Ohmer To High Main Board $300 Question fromOhms and Ohmer To A lemon with zinc and iron sticking out of it is a _______________. Identify the Electrodes and the Electrolyte. Main Board Answer $300 Answer fromOhms and Ohmer To Battery Electrode –Zinc and Iron Electrolyte – Lemon Juice Main Board $400 Question fromOhms and Ohmer To After a long day at school, you finally get to sit home and relax. You turn on your 120 Volt Nintendo that uses a current of 10 amps and your television that has a potential difference of 42, with 0.5 amps. Suddenly, you realize your living room circuit breaker will power off if you have more than 95 Ohms of resistance. Will your Circuit breaker power off? Why or why not? Main Board Answer $400 Answer fromOhms and Ohmer To 120 V/10 A = 12 Ω Nintendo 42 V/0.5 A = 84Ω TV 96 Ω Total. Yes it will turn off, too much resistance! Main Board $500 Question fromOhms and Ohmer To Give all 4 factors that affect resistance and explain how. Main Board Answer $500 Answer fromOhms and Ohmer To Length – Longer more Ω, shorter less Diameter – Thinner more Ω, Thicker less Material it is made from – Insulator vs Conductor Temperature – Heat means Ω, Cool is better Main Board $100 Question from Wattcrawler This is the formula to determine power Main Board Answer $100 Answer from Wattcrawler Power = Volts x Amps Main Board $200 Question from Wattcrawler Draw the circle that will help Solve for power, and the three formulas associated with it Main Board Answer $200 Answer from Wattcrawler Power= Volts X Amps Amps = Power/ Volts Volts = Power/Amps Main Board $300 Question from Wattcrawler The difference between a wet cell and a dry cell Main Board Answer $300 Answer from Wattcrawler Wet cell electrolyte is a liquid Dry cell electrolyte is a paste Main Board $400 Question from Wattcrawler Lemon juice is an example of a(n) ________ Main Board Answer $400 Answer from Wattcrawler Electrolyte Main Board $500 Question from Wattcrawler What is the total resistance of the circuit? Main Board Answer $500 Answer from Wattcrawler 26W/10V = 2.6A 14W/10V=1.4A 94W/10V=9.4A 10V/2.6A=3.85Ω 10V/1.4A=7.14 Ω 10V/9.4A=1.06Ω HOWEVER TOTAL Ω = TOTAL V / TOTAL A 10V/13.4A = .75 Ω Main Board $100 Question from The Hunger Games: ElectricJay Lightning is an example of this Main Board Answer $100 Answer from The Hunger Games: ElectricJay Induction Main Board $200 Question from The Hunger Games: ElectricJay What is significant about Edison and Tesla’s rivalry? What are they known for today? (In relation to each other) Main Board Answer $200 Answer from The Hunger Games: ElectricJay Tesla worked for Edison, invented a better product but his name was slandered so he isn’t as famous as he probably should be. Edison – Direct Current Tesla – Alternating Current Main Board $300 Question from The Hunger Games: ElectricJay How do direct and alternating current differ? Main Board Answer $300 Answer from The Hunger Games: ElectricJay Direct travels in one direction continuously, cant travel very far, mostly used for batteries now Alternating current travels back and forth repeatedly, can be used over long distances, almost all electric now. Main Board $400 Question from The Hunger Games: ElectricJay A 490 Watt Microwave uses 7.0 Amps of power from a wall socket. How much Resistance does the microwave have? Main Board Answer $400 Answer from The Hunger Games: ElectricJay 10 Ohms Main Board $500 Question from The Hunger Games: ElectricJay A circuit contains a 12-volt battery and two 3ohm bulbs in series. A. Calculate the total resistance of the circuit. B. Calculate the current in the circuit. C. Calculate the power of each bulb. D. Calculate the power supplied by the battery Main Board Answer $500 Answer from The Hunger Games: ElectricJay a. 6 ohms b. 2 amps c. 12 Watts d. 24 Watts Main Board Final Jeopardy A clothes dryer in a home has a power of 4,500 watts and runs on a special 220-volt household circuit – What is the current through the dryer? – What is the resistance of the dryer? – How many kilowatts are used by the dryer? – How many kilowatt hours of electricity are used by the dryer if it used for 4 hours in one week? – If your town charges $0.15/kWh, what is the cost to use the clothes dryer for a month? (If there are four weeks in a month) Main Board Answer Final Jeopardy Answer A=4500W/220V = 20.45A Ω = 220V/20.45A = 10.76 Ω 4500W = 4.5kW 4.5kW x 4 hours = 18 kWh 52 Weeks in a year – 52 x 18 kWh x $0.15 = 140.40 Main Board