Electricity

3. The ratio of vols/amps is the unit of resistance called.
4. The difference in electric potential energy between two points per unit electric charge.
10. the ends of a magnetic object, where the magnetic force is strongest.
12. Materials that have a property of opposing or reducing a current.
14. the SI unit of measurement of power; equivalent to Joule/second.
17. a closed circuit in which the current divides into two or more paths before recombining to complete the circuit.
18. the ends of a magnetic object, where the magnetic force is strongest
20. an electrical device that provides a path for electrical current to flow.

1. accidental contact between two points in an electric circuit that have a potential difference.
2. a circuit in which the objects are connected in a single path.
5. a device that increases or decreases the voltage of alternating current.
6. materials which easily allow charges to flow through them *metals, water*.
7. resistance, and current are related.
8. measurement of power in volts.
9. a flow of electricity through a conductor. electrical power the rate at which electrical energy is converted to another form of energy.
11. A property that causes subatomic particles such as protons and electrons to attract or repel each other.
13. car batteries and lead storage batteries. electrometer instrument for measuring electrical potential (charges).
15. a material in which charges cannot move freely such as rubber, plastic, or glass. dry cell battery common battery used in calculators, watches, radios, and tape players.
16. The field around charged particles that exerts a force on other charged particles.
19. the rate at which work is done