# How do you put a uniform charge on an insulator?

• johne1618
In summary, to put a uniform charge on the surface of a conducting or insulating hollow sphere, one simply needs to touch it at one point with an electrode. However, if the sphere is insulating, some physical spraying of charge or ionization of surface atoms may also be necessary. Additionally, experiments could be done to measure the mass of an electron inside a charged spherical insulator and potentially create small atoms for easier fusion.
johne1618
To put a uniform charge on the surface of a conducting hollow sphere one just needs to touch it at one point with an electrode.

To put a uniform charge on the surface of an insulating hollow sphere, do you have to somehow physically spray charge all over it?

Yes. You might also try to ionize surface atoms.
What for?

maimonides said:
Yes. You might also try to ionize surface atoms.
What for?

I would like to do some of experiment to measure the mass of an electron inside a charged spherical insulator. I think 1/2 the electrostatic energy between the electron and the charged shell would reside in the field around the electron and would therefore make it heavier.

If we could make the electron heavy then we could make small atoms with these heavy electrons. Small atoms might fuse much more easily than normal size ones.

That's it - I want to solve the world's energy problems and climate change problems. ;)

johne1618 said:
To put a uniform charge on the surface of a conducting hollow sphere one just needs to touch it at one point with an electrode.

To put a uniform charge on the surface of an insulating hollow sphere, do you have to somehow physically spray charge all over it?

There is no such thing as a perfect insulator, some materials just have extremely high resistance. Since the total charge on the sphere would be relatively small very little current would need to flow on the sphere in order for the charge to equalize. While the time for a small charge to flow through high resistance would be greater then low resistance I believe the time frame would be a few minutes at the most.

I would like to clarify that it is not possible to physically spray charge onto an insulator to achieve a uniform charge distribution. Unlike conductors, which allow the movement of electrons, insulators do not allow for the flow of charge. Therefore, the traditional method of charging by contact with an electrode would not be effective.

To put a uniform charge on an insulator, alternative methods such as induction or polarization can be used. Induction involves placing the insulator in an electric field, which causes the charges within the insulator to redistribute and create a uniform charge on the surface. Polarization, on the other hand, involves aligning the molecules within the insulator to create a dipole moment, resulting in a uniform charge distribution on the surface.

In conclusion, while it is possible to achieve a uniform charge on a conductor by contact with an electrode, the same method cannot be used for insulators. As a scientist, it is important to understand the properties of different materials and the appropriate methods for charging them in a uniform manner.

## 1. How does an insulator become charged?

An insulator can become charged through a process called triboelectric charging, where two materials rub against each other and exchange electrons, leaving one material with a positive charge and the other with a negative charge. This charge separation can also be achieved through contact with a charged object or through induction.

## 2. Can any insulator become charged?

Yes, any insulating material has the potential to become charged through friction, contact, or induction. However, the ability to hold and maintain a charge may vary depending on the material's properties.

## 3. What factors affect the amount of charge that can be placed on an insulator?

The amount of charge that can be placed on an insulator depends on its surface area, shape, and material properties. The thickness of the insulator can also affect its ability to hold a charge.

## 4. How do you put a uniform charge on an insulator?

To put a uniform charge on an insulator, you can use a process called corona charging, where a high voltage is applied to the surface of the insulator, causing a buildup of charge. Another method is to use a charge spray gun, which sprays charged particles onto the surface of the insulator.

## 5. Can the charge on an insulator be controlled?

Yes, the charge on an insulator can be controlled through various methods such as adjusting the voltage or using different materials for contact or induction. The charge can also be neutralized by grounding the insulator or by using an opposite charge to cancel it out.

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