science period 3 week 12

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Across
  1. 2. the unit of measure for electrical current
  2. 4. an electric current flowing in one direction only.
  3. 7. an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies
  4. 8. a simple pathway that lets electrons flow to one or more resistors
Down
  1. 1. a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space
  2. 3. comprises branches so that the current divides and only part of it flows through any branch
  3. 5. the refusal to accept or comply with something; the attempt to prevent something by action or argument
  4. 6. difference in electric potential between two points