In order to charge a device such as a mobile phone or computer, an outlet must be in operation. This happens because electric devices require power in order to function.
In the case of an electric device, such as a phone or computer, the battery needs to be charged in order for it to operate. During this process, some work for you! These objects use motors and rechargeable batteries to keep functioning.
The work done by the electric force is not only moving a charge from a low voltage source to a higher voltage source, it is also protecting the charge from external factors that could damage or destroy it. This includes damaging solar cells or charging equipment.
The right amount of work is needed for each charge so as not to run out of energy.
Calculate work using electric force
When you read about how much work a motor generates, you might wonder how the motor gets that work.
The work generated by a motor is named work-energy. A motors generates work when it changes momentum in response to a change in electric field.
Work-energy is the basis for calculating how much chores must be done and for calculating how much money you should spend on them. As an example, cleaning your bedrooms and cooking your meals cost you probably less than visiting the grocery store or shopping for ingredients.
You can calculate how much work needs to be done using the Work Equation.
Electric force and displacement
If you can think of a changing force that moves an object, then you can think of an electric force as such a changing force. An electric charge acts as a special kind of moving charge.
The amount of electricity in an electric charge varies from one piece of metal to the next, but it always remains the same amount due to its charge. This amount of electricity is what makes an electric charge an excellent candidate for use as a moving energy source.
When two surfaces are touching, there is a tiny bit of resistance caused by the 2 objects with their differing amounts of electricity. When one moves against this resistance, they experience an effort to push away from the other. This internal fighting cannot take place while the surface is charged, so it has to be displaced in order for it to operate as energy.
The displacement must occur instantly or it would not work and make the other object function. This is why charges are used in movements.
Sample problem using electric force
In an elevator, the power source is the motor. The electric force that moves the up or down arrows on the control panel depends on how much electricity is plugged in to the electrical plug.
In an electric water heater, the power source is a built-in fan. The electric force that waters your hot water comes from a generator and fan system.
In a dry air conditioner, the power source is a blower unit. The electric force that cools your room comes from fans mounted on metal brackets around the ceiling.
In a ceiling fan, the power source is another piece of equipment called a blower unit. The electric force that moves air in and out of your room comes from these units.
These examples include built-in components, such as fans and blowers, but not necessarily ones that are mounted on metal surfaces.
Electric field strength
When a charge is moving, it requires some help from an electric field to push it along. The stronger the field, the faster the charge.
The stronger the field, the more powerful. A small personal energy storage device can require a very strong electric field to move down its wire!
Some charges are more resistant to movement than others. This is because certain directions require a less intense electric field to initiate motion in a charge. This is why some devices can be moved by an air current instead of an electrical current.
A very common way that charges are moved is by means of a magnetic field. This happens at higher power levels, where physical laws do not apply.
Understanding the work done by the electric field on a charge
When a charge moves from a to b, its movement is influenced by the work done by the electric field around it. This work is caused by the positive and negative charges in contact with each other.
The more positive and negative charges there are, the greater the work done. This is because electrons in a charge have more individuality than atoms.
Some of these individual electrons have greater work to do when they move together while a whole unit of matter such as a wire or battery is left untouched. This can be due to less energy being available to move the charge or due to not being needed yet.
A good way to think about this is that when an electric field works on a charge, it receives something in return like electricity or not enough electricity to do its job.
How does this compare to gravitational field work?
In comparison to the work done by the electric force, it is very small. The electric force only moves a 1-2 nA (billionths of a milliamp-second) movement. This is tiny!
However, in comparison to gravity, which can take many thousands of years to operate, this works very well. As the charged particle moves down the cord, it is affected by gravity. As it returns to its charge state, it rebounds back up the cord!
This works for many generations before you and I were born so it has a long life as an energy efficient way to move a charge.
Sample problem using gravitational field work
If you could move a charge from a to b, what would you do next? If you could move a charge between two charges, what would you do next?
The answer to these questions depends on where the charges are.
If the charges are in opposite poles of a battery, the next step is to create an electric field that will push the charges together. This requires some additional work from the electric force, as it has to draw the charges together.
If the charges are in same poles of a battery, then just provide enough energy to move them together. As these are same electric pole batteries, this should be easy!
As discussed earlier, different phenomena require different forces or adjustments in forces.
Why is this important?
Without this work, your home would be vulnerable to an outside impact that caused a charging conversion process to stop. This could result in a dangerous situation where the electricity is converted into heat and then disolved into a water-based liquid. This would result in an extremely hot liquid that could potentially cause property damage or death.
Therefore, it is important to know what this process is and what it does. It is important for your home safety as well as for the environment because lacking an electric force can have negative effects on the earths climate.
There are many processes that require external energy to work. These processes can range from being needed for living things to developing and operating, to being needed for buildings to develop functionalities that require external energy. As this article does not go into detail on these functions, we will only introduce one picture at a time.
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