relays

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Across
  1. 3. a complete and closed path around which a circulating electric current can flow.
  2. 5. energy that is produced by mechanical, electrical, or other means and used to operate a device.
  3. 6. a force that tends to cause rotation.
  4. 8. the production of an electric current in a conductor by varying the magnetic field applied to the conductor.
  5. 9. an electrical device consisting of a coiled wire for converting the level of a voltage, producing a magnetic field, or adding an inductance to a circuit.
  6. 10. an electrical device, typically incorporating an electromagnet, which is activated by a current or signal in one circuit to open or close another circuit.
Down
  1. 1. the rate per second of a vibration constituting a wave in electromagnetic field
  2. 2. the central point, pin or shaft on which a mechanism turns or oscillates.
  3. 4. a cylindrical coil of wire acting as a magnet when carrying electric current.
  4. 7. an electromotive force or potential difference expressed in volts.