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  1. Electrician Definition & Meaning | Britannica Dictionary

    plural electricians Britannica Dictionary definition of ELECTRICIAN [count] : a person who works on and repairs electrical equipment

  2. Electricity | Definition, Facts, & Types | Britannica

    Dec 21, 2025 · Key People: Thomas Edison Rookes Evelyn Bell Crompton Edward Weston Charles Francis Brush Fleeming Jenkin (Show more) Related Topics: bioelectricity electro …

  3. electrician - Kids | Britannica Kids | Homework Help

    Electricians work with electrical power. They install, test, and maintain wiring, lighting systems, and fixtures in homes and businesses. Electricians work indoors and…

  4. insulators and conductors - Kids | Britannica Kids | Homework Help

    Electrical objects use metal parts to conduct electricity, such as the copper wires inside electrical leads, the metal pins in plugs, and the metal wire filaments in lightbulbs.

  5. Resistance | Ohm’s Law, Voltage, Current | Britannica

    3 days ago · The ohm is the common unit of electrical resistance, equivalent to one volt per ampere and represented by the capital Greek letter omega, Ω. The resistance of a wire is …

  6. Electrical conductor | physics | Britannica

    The way that atoms bond together affects the electrical properties of the materials they form. For example, in materials held together by the metallic bond, electrons float loosely between the …

  7. Rectifier | Types, Definition, & Facts | Britannica

    Dec 12, 2025 · rectifier, device that converts alternating electric current into direct current. It may be an electron tube (either a vacuum or a gaseous type), vibrator, solid-state device, or …

  8. Resistor | Ohm’s Law, Voltage, Current | Britannica

    Dec 12, 2025 · In a home electrical circuit, for instance, the same voltage is applied across each light or appliance, but each of these loads draws a different amount of current, according to its …

  9. Electrical and electronics engineering | Types & Facts | Britannica

    electrical and electronics engineering, the branch of engineering concerned with the practical applications of electricity in all its forms, including those of the field of electronics.

  10. electric circuit - Students | Britannica Kids | Homework Help

    The electrical energy in a circuit can be measured in terms of both current and voltage. Current is the rate at which charge flows through a circuit, whereas voltage measures how strong that …