Electricity & Magnetism

2. a device that trips like a switch and opens the circuit when overloaded
3. the entire frequency range of electromagnetic waves
6. attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
8. electric current is directly proportional to voltage and inversely proportional to resistance; I = E/R
11. a device designed to transmit electricity, heat, etc.
12. the lines of force surrounding a permanent magnet or a moving charged particle
15. the rate at which energy is drawn from a source that produces a flow of electricity in a circuit
18. a field of force surrounding a charged particle
19. an electrical device that can interrupt the flow of electrical current when it is overloaded
20. any mechanical force that tends to oppose motion
21. a meter that measures the flow of electrical current in amperes
22. engine that converts mechanical energy into electrical energy by electromagnetic induction
23. an electrical device that provides a path for electrical current to flow

1. phenomenon exhibited by materials like iron (nickel or cobalt) that become magnetized in a magnetic field and retain their magnetism when the field is removed
4. measuring instrument that detects electric charge
5. a material such as glass or porcelain with negligible electrical or thermal conductivity
7. electrical conduction through a gas in an applied electric field
9. electricity produced by friction
10. fastening electrical equipment to earth
13. meter that measures the potential difference between two points
14. a device that attracts iron and produces a magnetic field
16. a motor that converts electricity to mechanical work
17. a flow of electricity through a conductor