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Basics of Electricity: Charge, Electric Field, and Circuit Elements

This review study covers the basic concepts of electricity, including the unit of charge, conservation of charge, Coulomb's Law, electric fields, circuit elements, Ohm's Law, power equations, and problem-solving examples. It also touches on potpourri topics like different types of current, transformers, wire resistance, and lightning safety.

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Basics of Electricity: Charge, Electric Field, and Circuit Elements

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  1. Jeopardy PHY101 Chapter 7 Review Study of Electricity By Cheryl Dellai

  2. Study of Electricity

  3. Basics $100 What is the basic unit of charge? ANSWER

  4. Basics $200 Like charges (repel/attract) ANSWER

  5. Basics $300 What is meant by Conservation of Charge? ANSWER

  6. Basics $400 What is Coulomb’s Law? ANSWER

  7. E Field $100 What is the definition of an Electric Field? ANSWER

  8. E Field $200 Electric field lines start on ____ charges and end on ____ charges or infinity. ANSWER

  9. E Field $300 The energy per unit charge supplied by a battery is its ________ . ANSWER

  10. E Field$400 What kind of charge is at the center of this picture? ANSWER

  11. Circuit Elements $100 What is the definition of conventional current? ANSWER

  12. Circuit Elements $200 What is a battery? ANSWER

  13. Circuit Elements $300 What is a resistor? ANSWER

  14. Circuit Elements$400 Suppose current is flowing in a wire from right to left. Which way do the electrons in the wire move? ANSWER

  15. Equations$100 What is Ohm’s Law? ANSWER

  16. Equations$200 What is the Power Equation? ANSWER

  17. Equations$300 What is the Power Usage equation? ANSWER

  18. Equations$400 Complete Table Use Add, Add Reciprocally R, Same to complete table ANSWER

  19. Problems$100 The light bulbs in this circuit are connected in _______. ANSWER

  20. Problems$200 The light bulbs in this circuit are connected in ____ . ANSWER

  21. Problems$300 A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms. The voltage of the battery is_______ . ANSWER

  22. Problems$400 Two charged bodies separated by a distance d exert an electrical force on each other. The distance d is doubled. The electrical force on each body is now ____ times the original force. ANSWER

  23. Potpourri $100 Name 2 types of current. ANSWER

  24. Potpourri $200 What does a transformer do? ANSWER

  25. Potpourri $300 If the temperature of a wire increases, its resistance _________ . ANSWER

  26. Potpourri $400 Lightning is dangerous to humans because lightning strokes have ________ ANSWER

  27. Basics$100Answer What is the basic unit of charge? Coulomb Basic Charges Proton p+ = +1.6*10-19C Electron e- = - 1.6*10-19C Back to Jeopardy

  28. Basics$200Answer Like charges (repel/attract). Repel Back to Jeopardy

  29. Basics$300Answer Conservation of Charge Net charge of universe is zero. Back to Jeopardy

  30. Basics$400Answer What is Coulomb’s Law? F = kEq1q2/d² kE =9.0 *109 N*m²/C² Back to Jeopardy

  31. E Field$100Answer What is the definition of an Electric Field? E=F/q E = kEq/d² for a pt charge SI Unit is N/C or Volts/m Back to Jeopardy

  32. E Field$200Answer Electric field lines start on + charges and end on - charges or infinity. A positive follows the electric field lines. Back to Jeopardy

  33. E Field$300Answer The energy per unit charge supplied by a battery is its voltage. Back to Jeopardy

  34. E Field$400Answer What kind of charge is at the center of this picture? It is positive. Back to Jeopardy

  35. Circuit Elements $100Answer What is the definition of conventional current? Flow of positive charge even when the charge is negative. SI unit 1 C/s = ! Amp = A Back to Jeopardy

  36. Circuit Elements $200Answer What is a battery? A battery is a device that supplies energy to a circuit by chemical reaction. EMF is Energy/Charge The SI is 1J/C = 1 Volt. Back to Jeopardy

  37. Circuit Elements $300Answer What is a resistor? A device that opposes the flow of current. Resistance R = V/I 1 Volt/Amp = 1 ohm = 1 Back to Jeopardy

  38. Circuit Elements $400Answer Suppose current is flowing in a wire from right to left. Which way do the electrons in the wire move? Left to right Back to Jeopardy

  39. Equations$100Answer What is Ohm’s Law? V = IR R is constant Back to Jeopardy

  40. Equations$200Answer What is the Power Equation? Power = IV =I²R = V²/R Back to Jeopardy

  41. Equations$300Answer What is the Power Usage equation? Energy = Power*Time 1 kW*h = 3,600,00 J = 3.6 MJ Back to Jeopardy

  42. Equations$400Answer Complete Table Use Add, Add Reciprocally R, Same to complete table Back to Jeopardy

  43. Problems$100Answer The light bulbs in this circuit are connected in parallel. Back to Jeopardy

  44. Problems$200Answer The light bulbs in this circuit are connected in series. Back to Jeopardy

  45. Problems$300Answer A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms. The voltage of the battery is_______ . V = IR = 8 Volts Back to Jeopardy

  46. Problems$400Answer Two charged bodies separated by a distance d exert an electrical force on each other. The distance d is doubled. The electrical force on each body is now 0.25 times the original force. Back to Jeopardy

  47. Potpourri $100Answer Name 2 types of current. DC and AC Back to Jeopardy

  48. Potpourri $200Answer What does a transformer do? Step up or down voltage in AC circuit. Back to Jeopardy

  49. Potpourri $300Answer If the temperature of a wire increases, its resistance increase. Back to Jeopardy

  50. Potpourri $400Answer Lightning is dangerous to humans because lightning strokes have large current. Back to Jeopardy

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