Electricity question

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    Electricity
In summary, electricity is a form of energy that results from the movement of charged particles through a conductive material. It works by creating a flow of electrons from a high concentration to a low concentration. There are two main types of electricity, DC and AC, and it can be generated through electromagnetic induction, chemical reactions, and nuclear fission. The units of electricity include ampere, volts, watts, and kilowatt-hours (kWh).
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Aidan123
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Modern high voltage electrical transmission lines (400kV) may be constructed with cable having a core of twisted steel strands surrounded by layers of twisted aluminium strands?


What advantage is gained by using strands of steel rather than a single wire of equivalent total cross section?
 
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  • #2
Stranded cables are more flexible than solid.

How would you wind a solid cable of that thickness on and off a drum?
 
  • #3
Steel for its strength, Aluminium for it's conductivity.

Stranded steel less prone to fracture as well as easier to handle.
 

1. What is electricity?

Electricity is a form of energy that results from the movement of charged particles, such as electrons, through a conductive material. It is a fundamental force of nature that powers many of our modern devices and technologies.

2. How does electricity work?

Electricity works by creating a flow of electrons through a conductive material, such as a wire, from a high concentration to a low concentration. This movement of electrons is known as an electric current and can be harnessed to power devices and perform work.

3. What are the different types of electricity?

There are two main types of electricity: direct current (DC) and alternating current (AC). DC flows in one direction, while AC constantly changes direction. AC is the type of electricity used in most homes and buildings, while DC is used in batteries and smaller electronic devices.

4. How is electricity generated?

Electricity can be generated in a variety of ways, but the most common method is through electromagnetic induction. This involves rotating a magnet inside a coil of wire, which creates a flow of electrons. Other methods include chemical reactions in batteries and nuclear fission in power plants.

5. What are the units of electricity?

The basic unit of electricity is the ampere, which measures the rate of flow of electric charge. Other common units include volts, which measures the electric potential difference, and watts, which measures the rate at which energy is transferred. Kilowatt-hours (kWh) are also commonly used to measure the amount of electricity consumed over time.

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