Forces of Nature Vocabulary

3. phenomenon exhibited by materiels like iron(nickel or cobalt)that become magnetized in a magnetic field and retain their magnetism when the field is removed
5. a device that trips like a switch and opens the circuit when overloaded
7. an electrical device that can interrupt the flow of electrical current when it is overloaded
8. a flow of electricity through a conductor
10. fastening electrical equipment to earth
11. a device that attracts iron and produces a magnetic field
14. electric current is directly proportional to voltage and inversely proportional to resistance;I=E/R
15. a motor that converts electricity to mechanical work
16. engine that converts mechanical energy into electrical energy by electromagnetic induction
18. the lines of force surrounding a permanent magnet or moving charged particle
21. electrical conduction through a gas is an applied electric field
23. electricity produce by friction

1. a field or force surrounding a charged particle
2. the rate at which energy is drawn from a source that produces a flow of electricity; expressed in volts
4. measuring instrument that detects electric charge; two gold leaves diverge owing to repulsion of charges with like signs
6. an electrical device that provides a path for electrical current to flow
9. a device designed to transmit electricity,heat,etc
12. the entire frequency range of electromagnetic waves
13. attraction for iron;associated with electric currents as well as magnets; characterized by fields of force
17. meter that measures the potential difference between two points
19. a material such as glass or porcelain with negligible electric or thermal conductivity
20. any mechanical force that tends to oppose motion
22. a meter that measures the flow of electrical current in ampres