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3 rd Quarter Review

3 rd Quarter Review. Question 1 - 10. A positive charge of 5.6*10^-6C is acted upon by a force of 50N at a certain distance. What is the electric field at that same distance?. Answer 1 – 10. =(50)/(5.6*10^-6) =8.93*10^6. Question 1 - 20.

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3 rd Quarter Review

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  1. 3rd Quarter Review

  2. Question 1 - 10 • A positive charge of 5.6*10^-6C is acted upon by a force of 50N at a certain distance. What is the electric field at that same distance?

  3. Answer 1 – 10 • =(50)/(5.6*10^-6) • =8.93*10^6

  4. Question 1 - 20 • How many electrons must be removed from an electrically neutral gold medal to give it a charge of 3.96*10^-6.

  5. Answer 1 – 20 • =(3.96*10^-6)/(1.6*10^-19) • =2.475*10^13

  6. Question 1 - 30 • What is the net force on charge 2 if charge 1 is -2C, charge 2 is 5C and charge 3 is 3C? D= 4m, k=1

  7. Answer 1 – 30

  8. Question 1 - 40 • Three positive charges of q1=3.5*10^-6, q2=8.0*10^-6 and q3=2.3*10^-6, respectively, are arranged in a triangle, as shown in figure. Find the magnitude of the electric force on the q2 charge.

  9. Answer 1 – 40

  10. Question 1 - 50 • A charge q1=+10.0uc is at the origin, and a charge q2=-18.0uc is on the x-axis .65m from the origin, Find the electric field strength at Point P, which is on the y-axis .255m from the origin. Angle is 62.

  11. Answer 1 – 50

  12. Question 2 - 10 • When there is an equal amount of positive and negative charges on an object, the object is………………..

  13. Answer 2 – 10 • Neutral

  14. Question 2 - 20 • Electric field lines indicate…………………..

  15. Answer 2 – 20 • Direction and speed

  16. Question 2 - 30 • The leyden jar shown had negative charge on the inside cup and the outside cup(the one in middle)………….

  17. Answer 2 – 30 • Positive

  18. Question 2 - 40 • When the charge is doubled on one particle, the attractive force between two particles is……

  19. Answer 2 – 40 • Doubled

  20. Question 2 - 50 • A metal can is brought near a negative charged PVC pipe. The can is _____________ to the pipe because the can is ____________

  21. Answer 2 – 50 • Attracted and polarized

  22. Question 3 - 10 • In solid conductors , electric current is the flow of………….

  23. Answer 3 – 10 • Electrons

  24. Question 3 - 20 • The relationship between current and potential in Ohm’s Law is…………

  25. Answer 3 – 20 • Directly proportional

  26. Question 3 - 30 • How much current will flow through .1 Ohm resistor?

  27. Answer 3 – 30

  28. Question 3 - 40 • A circuit has only one resistor, a 50 ohm one. If a second 50 ohm resistor is added in parallel, the overall resistance will be…

  29. Answer 3 – 40 • 25 ohms

  30. Question 3 - 50 • What is the current for resistor 2?(2 decimals) • R1=13 • R2=24 • R3=20 • R4=6

  31. Answer 3 – 50

  32. Question 4 - 10 • A wire carries a current of 20amps at an angle of 90 degrees to a magnetic field “B”. If the wire is 10m long and the magnetic force is 50N, what is the strength of the magnetic field?

  33. Answer 4 – 10

  34. Question 4 - 20 • A wire has a magnetic field of strength of 50T. If the wire is 16.5 meters long and the magnetic for is 100N. What is the current?

  35. Answer 4 – 20

  36. Question 4 - 30 • Dr.V is on his Jetpack and is flying due east at 120m/s passing over Atlanta where the magnetic field of the earth is 3.3*10^-5 Tesla. Dr.V has a positive charge of 16*10^8C. What is the magnitude of magnetic force in Newton's on Dr.V?

  37. Answer 4 – 30

  38. Question 4 - 40 • Dr.V found an unknown compound which has a force of 5*10^-9N and a charge of 2nC and a has horizontal velocity of 5000m/s. He needs your help to help find him the magnetic field force of the unknown compound.

  39. Answer 4 – 40

  40. Question 4 - 50 • A square coil of wire in a motor coil containing a single turn is placed in a uniform 10.8T magnetic field. Each side has a length of 10m and the current of the coil is 15amps. Determine the magnitude of the magnetic force on the top side of the wire.

  41. Answer 4 – 50

  42. Question 5 - 10 • Is this a positive or a negative current?

  43. Answer 5 – 10 • Positive

  44. Question 5 - 20 • Where is the magnetic field strength the closet?

  45. Answer 5 – 20 • Close to a magnet pole

  46. Question 5 - 30 • What is the name of the device that converts electric energy into mechanical energy?

  47. Answer 5 – 30 • Electric motor

  48. Question 5 - 40 • What direction is the force using FBI

  49. Answer 5 – 40 • Up

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