| brownout |
a cut or reduction of electrical power in a neighborhood or city. |
| buzzer |
an electrical device that signals by buzzing. |
| can opener |
a device used for opening cans. Some can openers can be operated by hand while others are small electrical appliances. |
| charge |
the amount of electricity in an object. Charge causes electrical energy to flow in a current. The movement of electrical energy from one point to another is caused by a difference between the charges at the two points. An electrical charge can be positive or negative. [1/12 definitions] |
| cord |
a covered wire used to supply power from an electrical outlet to an appliance such as a toaster or lamp. [1/4 definitions] |
| diaphragm |
a thin disk in electronic tools such as microphones, speakers, and telephones. In a microphone, the diaphragm changes sound vibrations into electrical signals. In a speaker, it changes electrical signals into sound vibrations. [1/2 definitions] |
| electrician |
one whose job is to install or repair electrical equipment. |
| electricity |
electrical current. [1/3 definitions] |
| fuse2 |
an electrical device with a connection that melts if there is too much heat. Fuses protect buildings by breaking a circuit before a fire can start. [1/4 definitions] |
| generator |
the part of a car that generates electrical energy for the car. [1/2 definitions] |
| ground1 |
to connect to an electrical ground. [1/9 definitions] |
| ion |
an atom or group of atoms that has an electrical charge. |
| kilowatt |
a unit of electrical power equal to one thousand watts. (abbreviated: kw, kW) |
| neutron |
a small particle present in the nucleus of all atoms except the hydrogen atom. Neutrons have no electrical charge. The mass of a neutron is about equal to the mass of a proton. |
| outlet |
the point in an electrical system where the cord is plugged into the current. [1/4 definitions] |
| ozone |
a form of oxygen that occurs when oxygen is exposed to an electrical charge, like lightning. It is found naturally in Earth's atmosphere. |
| plug |
a device with two or three prongs on the end of an electrical cord. It is put into an outlet to make a connection with an electric circuit. [1/4 definitions] |
| power point |
the British word for the point in an electrical system where the cord is plugged into the current. Power point has the same meaning as outlet. |
| proton |
a tiny particle in the nucleus of an atom. A proton has a positive electrical charge. |
| shock1 |
the feeling caused by an electrical current passing through the body. [1/6 definitions] |
| short |
a break in an electrical circuit; short circuit. [1/9 definitions] |