| 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] |
| charged |
carrying electrical energy. |
| charging station |
a machine that supplies electrical energy to cars or other vehicles that use electricity to power them. |
| cord |
a covered wire used to supply power from an electrical outlet to an appliance such as a toaster or lamp. [1/4 definitions] |
| dead |
When we say a battery is dead, we mean that it has no electrical power in it. [1/9 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] |
| electrical |
When something is electrical, it has to do with electricity. |
| electrician |
one whose job is to install or repair electrical equipment. |
| electricity |
electrical current. [1/3 definitions] |
| electronics |
Electronics is a science that has to do with the flow of electrical energy and with devices that use this type of energy in complicated ways, such as computers. |
| 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) |
| line1 |
a wire or set of wires that carry signals in an electrical or telephone system. [1/11 definitions] |
| 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] |