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Across 3. Things that are negatively charged and things that are positively charged pull on each other 4. a region around a charged particle or object within which a force would be exerted on other charged particles or objects 7. the release and transmission of electricity in an applied electric field through a medium such as a gas 8. an electromotive force or potential difference expressed in volts 9. a region around a magnetic material or a moving electric charge within which the force of magnetism acts 13. a material whose internal electric charges do not flow freely 15. a stationary electric charge 19. a cylindrical coil of wire acting as a magnet when carrying electric current 20. involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current

Down 1. a substance in which electrical charge carriers 2. when each device is connected in a manner such that there is only one pathway by which charge can traverse the external circuit 5. the interaction of electric currents or fields and magnetic fields 6. a consequence of the electromagnetic force 10. when each device is placed in its own separate branch 11. The insides of these generators are coils of wire spinning in a magnetic field 12. If the two requirements of an electric circuit are met, then charge will flow through the external circuit 13. a soft metal core made into a magnet by the passage of electric current through a coil surrounding it 14. each of the points near the extremities of the axis of rotation of the earth or another celestial body where a magnetic needle dips vertically 16. a piece of iron that has its component atoms so ordered that the material exhibits properties of magnetism 17. the measure of the degree to which a conductor opposes an electric current through that conductor 18. a region within a magnetic material in which the magnetization is in a uniform direction