Across
- 6. a group of atoms with aligned magnetic poles
- 10. this states that the current in a circuit equals voltage difference divided by resistance
- 12. a temporary magnet made by wrapping a wire coil carrying a current around an iron core
- 13. net movement of electric charges in a single direction through a wire
- 14. accumulation of excess electrical charges on an object
- 16. the tendency of a material to oppose the flow of electrons
- 17. a closed path that electric current follows
- 18. negatively-charged subatomic particle
- 20. this type of current reverses the direction of the current flow in regular patterns
Down
- 1. force that causes electric charges to flow
- 2. the strength between two magnets depends on the ___ between them
- 3. the process of transferring charge by touching is called charging by ___
- 4. when electric current flows through a wire, a ___ field forms around the wire
- 5. this type of circuit has current flowing in only one loop
- 7. a device that changes electrical energy into mechanical energy
- 8. this type of circuit has two or more branches for current to flow through
- 9. this type of current flows in only one direction
- 11. opposite charges ___
- 15. rearrangement of electrons on a neutral object caused by nearby charged objects is called charging by ___
- 16. like charges ___
- 19. positively-charged subatomic particle