Electricity 1

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Across
  1. 4. A unit of energy equivalent to 3.6 MJ
  2. 6. 1.6 x 10^-19 C is the charge of an __________
  3. 8. Ohm's law states that at a constant temperature, potential difference and current are ______ ________ to each other
  4. 9. The IV characteristic for this component looks like an 'S'
  5. 11. The number of free electrons per unit volume in a material
  6. 12. Insulators have a _______ number density than semiconductors
  7. 15. The IV characteristic for this component is directly proportional
  8. 16. Unit for power
  9. 17. In a circuit, the ____ of the potential differences across each component is equal to the emf of the cell
  10. 24. The energy transferred from electrical energy to other forms per unit charge
  11. 25. Defined as the energy transferred per unit charge
  12. 26. Conductors have a _______ number density than semiconductors
  13. 27. When temperature increases in a wire, the electrons ________ more frequently with the ions causing lower current
  14. 28. For a ________, the resistance decreases as potential difference increases
  15. 29. = Current x potential difference
  16. 31. ___________ current flows from the positive to negative terminal
  17. 33. If cross sectional area of a wire increases, the mean drift velocity will _________
  18. 36. Metals are good conductors because they have ______ __________
  19. 37. Voltmeters need to be connected in _________ with the component they are measuring
Down
  1. 1. The unit of voltage
  2. 2. The rate of flow of charge
  3. 3. 1 Joule of energy transferred per 1 coulomb of charge
  4. 5. An example of a semiconductor
  5. 6. The energy transferred from chemical to electrical energy per unit charge
  6. 7. The unit of charge
  7. 10. The unit of current
  8. 13. A diode will only allow current through it past a certain _________ voltage
  9. 14. =nAve
  10. 18. A diode only allows current in one ________ to flow through it
  11. 19. Electrons ______ from the negative to positive terminals
  12. 20. Ammeters need to be connected in _________ with the component they are measuring
  13. 21. An LDR has an ________ proportional relationship between light intensity and resistance
  14. 22. The carriers of charge in conducting wires
  15. 23. = potential difference / current
  16. 30. In an NTC thermistor, the number density ___________ when the temperature increases
  17. 32. The unit of resistance
  18. 34. Charge particles interact with the _____ field
  19. 35. The carriers of charge in electrolytes