Perfect ten crossword puzzle

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Across
  1. 5. The measure of the opposition to current flow in an electrical circuit.
  2. 7. An electromotive force or potential difference expressed in volts.
  3. 9. The SI base unit of electrical current.
  4. 10. A form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current.
Down
  1. 1. An object or type of material that allows the flow of charge in one or more directions.
  2. 2. circuit An electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance.
  3. 3. A material in which electric current does not flow freely.
  4. 4. circuit A circuit in which all elements are arranged in a single path.
  5. 6. electricity A stationary electric charge, typically produced by friction, which causes sparks or crackling or the attraction of dust or hair.
  6. 8. circuit A circuit that has two or more paths for current to flow through.