Across
- 3. the unit resistance is expressed in
- 4. _______ current charges always flow in the the same direction
- 9. ________ current charges repeatedly shift from flowing in one direction to the reverse direction
- 11. the rate of flow of electric charges is called electric ________
Down
- 1. a very good metal electrical conductor
- 2. the unit voltage is expressed in
- 5. materials that have high resistance to electrical charges
- 6. the amount of work required to move each unit of charge
- 7. a material that is a good insulator
- 8. the opposition to the flow of electric charge
- 10. the unit electric current is expressed in
- 11. materials that have low resistance