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Find out what conductors and insulators are and how electricity can pass through some things and not others in this Bitesize Primary guide.
Separate these objects into conductors and insulators. Explain how you know if a material is a conductor or an insulator. Why are conductors often surrounded by an insulator for safety purposes?
Materials that conduct heat or electricity are known as conductors. Materials that do not conduct heat or electricity are known as insulators. Insulators and conductors have many useful functions.
Conductors are materials which allow electrical current to flow through them easily. Metals are generally good electrical conductors.
- Conductor vs. Insulator
- Electrical Conductors
- Thermal Conductors
- Sound Conductors
While a conductor transmits energy, an insulator slows or stops its passage. Some materials can be both a conductor and an insulator at the same time for different forms of energy. For example, most diamonds conduct heatexceptionally well, yet they are electrical insulators. Metals conduct heat, electricity, and sound.
Electrical conductors transmit electrical charge in one or more directions. Any charged particle may be transmitted, however, since electrons surround atoms, while protons are usually bound within the nucleus, it's much more common for electrons to move than protons. Either positive or negative charged ionsalso can transfer charge, as in seawater. ...
Most metals are also excellent thermal conductors. Thermal conductivity is heat transfer. This occurs when subatomic particles, atoms, or molecules gain kinetic energyand collide with each other. Thermal conduction always moves in the direction of highest to lowest heat (hot to cold) and depends not only on the nature of the material but also on th...
Transmission of sound through a material depends on the density of the matter because sound waves require a medium to travel. So, higher density substances are better sound conductors than low-density materials. A vacuum cannot transfer sound at all. Examples of good sound conductors include: 1. Lead 2. Steel 3. Concrete Examples of poor sound cond...
- Anne Marie Helmenstine, Ph.D.
An electrical conductor is a material that allows electric currents (flow of electric charges) to pass through it. All metals are electrical conductors. An electrical conductor has lots of charges that are free to move.
An electrical conductor is a material that allows electricity to pass through it easily. An electrical insulator is a material that does not allow electricity to pass through it easily. Metals are the best materials for conducting electricity.
