Electricity terms crossword

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Across
  1. 4. limits the current flowing in a circuit
  2. 7. only lets the current flow in the direction of the arrow
  3. 8. measures the current flowing in a circuit
  4. 9. measured in Ohm’s
  5. 12. closed circuit in which the current follows one path
  6. 13. a resistor that can be varied
  7. 14. measures the energy change in a circuit component
  8. 17. an energy user
  9. 18. commonly called a battery
  10. 19. a pathway along which an electric current exists and able to flow
Down
  1. 1. two or more cells connected in series
  2. 2. has a knob to vary the resistance
  3. 3. a thin wire which melts and breaks the circuit if the current gets too high
  4. 5. materials allow for charge transfer through the free movement of electrons
  5. 6. the circuit is divided into two or more paths
  6. 10. materials that impede the free flow of electrons
  7. 11. flow of electrons in one direction
  8. 15. Law V=IR
  9. 16. flow from negative to positive in wire