Table of Contents
- 1 What type of materials allow electricity to flow freely?
- 2 What material that allows electrons to move through it easily?
- 3 What is needed for heat to move what is needed for charge to move?
- 4 How are electrons in conductive materials different from insulators?
- 5 How are electrons moving through a conductor similar to liquid flow?
- 6 What happens to an electric force as you move farther from the source?
What type of materials allow electricity to flow freely?
The flow of electricity is called current. Metals are generally very good conductors, meaning they let current flow easily. Materials that do not let current flow easily are called insulators. Most nonmetal materials such as plastic, wood and rubber are insulators.
What material that allows electrons to move through it easily?
Electricity Vocabulary
| A | B |
|---|---|
| conductors | materials that allow electrons to move through them easily. |
| insulators | Materials through which electrons connot move easily. |
| elelctric current | The steady flow of electrons through a conductor. |
| circuit | An unbroken path through which a electric current can flow. |
What is the best material for transporting electricity?
Cards In This Set
| Front | Back |
|---|---|
| Light, heat, chemical and magnetic changes are all produced by : | Electricity |
| Material that best transports electricity is : | Conductor |
| Since silver and copper transport electricity, they are called : | Conductors |
| Materials that do not allow electricity to flow through them are called : | Insulators |
What is needed for heat to move what is needed for charge to move?
A difference in temperature is needed for heat to flow. A difference in electrical potential is needed for charge to flow. The flow of charge persists as long as there is potential difference ; without a potential difference, or once both ends reach an equilibrium, flow ceases.
How are electrons in conductive materials different from insulators?
In conductive materials, the outer electrons in each atom can easily come or go and are called free electrons. In insulating materials, the outer electrons are not so free to move.
How are electrons in different types of materials different?
The electrons of different types of atoms have different degrees of freedom to move around. With some types of materials, such as metals, the outermost electrons in the atoms are so loosely bound that they chaotically move in the space between the atoms of that material by nothing more than the influence of room-temperature heat energy.
How are electrons moving through a conductor similar to liquid flow?
The liquid-flow analogy is so fitting that the motion of electrons through a conductor is often referred to as a “flow.”. A noteworthy observation may be made here. As each electron moves uniformly through a conductor, it pushes on the one ahead of it, such that all the electrons move together as a group.
What happens to an electric force as you move farther from the source?
Explain what happens to an electric force as you move farther from the source. Define polarization. Figure 1. This power adapter uses metal wires and connectors to conduct electricity from the wall socket to a laptop computer. The conducting wires allow electrons to move freely through the cables, which are shielded by rubber and plastic.