Across
- 4. a material in which electric current does not flow freely
- 8. the resistance that an object encounters when moving against or over another
- 10. a particle with a positive electric charge
- 11. comprises a path along which the whole current flows through each component
- 14. an instrument for measuring electric current in amperes
- 15. comprises branches so the current divides and only part of it flows through a branch
- 16. an instrument used for measuring the electric potential difference between two points in an electric circuit
- 17. the direction of the oscillation is perpendicular to the direction of motion of the wave
- 18. a physical property of matter experiences a force when placed in an electromagnetic field
- 20. the measure of the opposition to the flow of the electric current, SI unit is ohm
- 21. is exerted between any two electrically charged objects
- 22. positively charged ion
Down
- 1. the field that surrounds electrically charged particles. Exerts force on all other charged particles in the field, either attracting or repelling them.
- 2. a particle with a negative charge
- 3. an electric charge, typically produced by friction
- 5. negatively charged ion
- 6. electricity flowing in only one direction
- 7. a material that can create heat
- 9. the rate at which electrical energy is transferred by an electric circuit, SI unit of power is watt
- 12. the flow of electric charge in a circuit
- 13. an electromotive force
- 14. an electric current that reverses its direction
- 19. the process by which heat or electricity is directly transmitted through the contact of 2 objects