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An electrical current is simply the flow of free electrons in and on the conductors. So they are a bit like water molecules in a garden hose. And like those water molecules the flow of free electrons can be physically impeded by whatever is in or on the electrical conductor.
When a material is a good conductor, the atoms and molecules of that good conductor do not get in the way of the free electrons. They do not resist the flow of those electrons very much. So even with just a low voltage to push the electrons along, the flow, the current of the electrons is high.
But when a material is a bod conductor, the atoms and molecules of that bad conductor do physically get in the way of those free electrons so that they cannot flow freely through the conductor. The resistance is high in a poor conductor. So it takes a relatively higher voltage to push electrons along in a bad conductor...if indeed they can be pushed at all. Some materials are so bad at conducting it's almost impossible to move those electrons along.
What else can I help you with?
What type of resistance do conductors have?
Conductors have resistance due to collisions between free electrons and atoms within the material. This resistance causes energy to be lost in the form of heat when current flows through the conductor. The resistance value depends on the material and dimensions of the conductor.
Electrical resistance is a property of conductors that is measured in units of?
Ohm
What effects the restance of an electrical conductor?
The resistance of an electrical conductor is primarily affected by its length, cross-sectional area, and the material it is made of. Longer conductors have higher resistance, while conductors with larger cross-sectional areas have lower resistance. Different materials have different resistivities, which also affect resistance.
What are conductors with almost zero resistance called?
Conductors with almost zero resistance are called superconductors. They are able to carry electrical current with no energy loss due to resistance, making them highly efficient in a variety of applications.
What is the impact of the AC skin effect on the performance of electrical conductors?
The AC skin effect causes the flow of alternating current to concentrate near the surface of a conductor, reducing its effective cross-sectional area for current flow. This increases resistance and can lead to power loss and decreased efficiency in electrical conductors.
What is condutors insulator?
Conductors are materials that allow the flow of electrical current, such as metals. Insulators, on the other hand, are materials that do not allow the flow of electrical current, like rubber or plastic. Conductors have low resistance to the flow of electricity, while insulators have high resistance.
Do conductors have low resistance?
Conductors have low resistance. Recall Ohm's law. The higher the conductor resistance, the greater the voltage drop along the conductor, and the less voltage that is available for the load. The conductor resistance is a resistance in series with the load. Also, higher conductor resistance results in more electrical power being converted into heat, warming up the conductors. This is calculated with the formula P=I2R. The greater the resistance, the greater the power wasted heating the conductors.
What are 3 good electrical conductors?
Copper, silver, and gold are three of the best electrical conductors due to their high conductivity and low resistance. These materials are commonly used in electrical wiring and electronics where efficient transmission of electricity is important.
What are disadvantages of conductors?
Disadvantages of good conductor
Which metal acts as an insulator?
Metals are conductors, not insulators. Both electrical and thermal conductors.
Are insulators dull brittle and poor conductors?
Yes, insulators are materials that are dull in appearance, brittle in nature, and poor conductors of electricity. They have high resistance to the flow of electrical current due to their atomic structure, which makes them ideal for electrical insulation purposes.
Does conductors offer very little resistance to flow of electric current?
Yes, conductors offer very little resistance to the flow of electric current due to their ability to easily transfer electrons. This is why materials like copper and gold are commonly used as conductors in electrical circuits.
