Voltage resonance

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Across
  1. 4. - to keep something in good condition
  2. 6. - having too much electrical force
  3. 8. - the ability of a system to store electrical charge
  4. 9. - devices that change the voltage of electricity
  5. 12. - small sticks with a flammable tip used for lighting fires
  6. 13. - having too much weight or pressure on something
Down
  1. 1. - an electric system that naturally vibrates at a certain frequency
  2. 2. - things that can cause harm or danger
  3. 3. - a device that resists changes in electrical current
  4. 5. - devices that protect electrical equipment from sudden increases in voltage
  5. 7. - objects that store and release electrical energy
  6. 10. - considering everything as a whole
  7. 11. - something that often leads to a particular result
  8. 14. - when an electric circuit vibrates at a specific frequency