1. Welcome! The Topic For Today Is…

2. Your Topic Tools we use to measure Resistance and Resistivity Current Electricity Series and Parallel Circuits Cut out the Static 200 400 600 800 1000 Bonus Question: 5000 pts

3. Topic 1: 200 Question: Ammeters measure… Answer Current

4. Topic 1: 400 Question: Voltmeters measure… Answer Potential Difference

5. Topic 1: 600 Question: Ammeters are connected in while voltmeters are connected in. Answer Series; Parallel

6. Topic 1: 800 Question: Ammeters have resistance while voltmeters have resistance. Answer Very little; Very much

7. Topic 1: 1000 Question: A galvanometer is… Answer A device to measure extremely small currents.

8. Topic 2: 200 Question: What is resistivity? Answer Resistivity is an intrinsic property of a material, which is a measure of the conductive ability of the material. The lower the value, the more conductive the material is.

9. Topic 2: 400 Question: What is a resistor? Answer A component in an electrical circuit, which “resists” the flow of electrons.

10. Topic 2: 600 Question: What is Resistance? Answer The ratio of the voltage drop across a device to the current flowing in it. Or the hindrance to the flow of charge.

11. Topic 2: 800 Question: As the length of a conductor increases, its resistance will while its resistivity will. Answer Increase; remain the same

12. Topic 2: 1000 Question: Determine the resistance of a copper wire that is 2.00 meters in length and has a radius of 150.  m Answer 0.487 

13. Topic 3: 200 Question: Conventional Current is… Answer the flow of positive charge.

14. Topic 3: 400 Question: A 40 Volt battery is connected to a 20 Ohm resistor. What is the current flowing in the circuit? Answer 2 Amperes

15. Topic 3: 600 Question: 2 amperes of current is equivalent to how many electrons per second? Answer 1.25x10 19 electrons per second

16. Topic 3: 800 Question: A cloud transfers 25 Coulombs of charge to the earth during a discharge lasting 0.75 seconds. What is the current flow. Answer 33.3 Amperes

17. Topic 3: 1000 Question: A cloud transfers 10,000 Coulombs of charge to the earth during a discharge lasting 0.50 seconds. If the potential difference between the cloud and the ground is 25,000,000 Volts, what is the resistance of the atmosphere? Answer 1250 Ohms

18. Topic 4: 200 Question: How do you find the total resistance and voltage in a series circuit? Answer You sum up the individual values for R and V.

19. Topic 4: 400 Question: Adding another resistor to a series circuit will cause the equivalent resistance to… Answer Increase

20. Topic 4: 600 Question: A 2, 4 and 6 Ohm resistor are connected in parallel. Which resistor will have the greatest current and which one will have the least? Answer The 2  resistor will have the greatest current while the 6  resistor will have the least. Remember: Electricity follows the path of least resistance.

21. Topic 4: 800 Question: Determine the equivalent resistance for 3 identical 6  resistors connected in series and parallel Answer In series: R eq = 18  In parallel: R eq = 2 

22. Topic 4: 1000 Question: A 16 and 26 Ohm resistor are connected in parallel across a potential difference of 40. V. What is the current in the circuit? Answer 4.0A

23. Topic 5: 200 Question: Electric field lines go from to. Answer Positive to negative

24. Topic 5: 400 Question: The units for the electric field intensity are: Answer N/C or V/m

25. Topic 5: 600 Question: Conservation of charge means… Answer The total charge of a system is constant. It can neither be created, nor destroyed.

26. Topic 5: 800 Question: Explain why a neutral object can be attracted to a charged object. Answer Due to separation of charge. Electrons are either attracted to the surface or repelled resulting in a surface charge.

27. Topic 5: 1000 Question: A proton experiences a force of 2.0x10 -20 N. What is the electric field? Answer 0.125N/C

28. Bonus Question: 5000 pts. Question: A proton is released from rest between two parallel plates where the electric field strength is 25,000 V/m. Determine the acceleration of the proton. Answer 2.4x10 12 m/s 2

29. The Winner Of The Last Round Write Down How Much Money You Are Willing To Risk If You get the Question write you win that money If you get it wrong you Loss the money!

30. The Winner Of The Last Round Write Down How Much Money You Are Willing To Risk If You get the Question write you win that money If you get it wrong you Loss the money!