Why Does Hair Stand Up When Touching a Van der Graaf Generator?

  • Thread starter Idrees
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In summary, the direction of hair standing out when touching a Van der Graaf generator is controlled by the electric field created by the charged particle sitting in the generator, which can be calculated using the equation relating force and charge in an electric field.
  • #1
Idrees
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Why does your hair stand out when you touch the the van der graaf generator ?? What controls the direction of the hair
 
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  • #2
Idrees said:
Why does your hair stand out when you touch the the van der graaf generator ?? What controls the direction of the hair

Well, since this is a homework/coursework question, we can't just give you the answer. But maybe we can give you a hint or two to help you figure it out yourself.

What is the equation that relates the force F on a charged particle Q in terms of its charge and the value of an electric field E that the particle is sitting in? What makes electric field?
 
  • #3
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When you touch a van der Graaf generator, you are essentially creating a static electric charge on your body. This charge interacts with the electric field created by the generator, causing your hair to stand out. This is known as the "Coulomb force" and is a result of the attraction and repulsion of electric charges.

The direction of the hair is controlled by the electric field of the van der Graaf generator. The electric field is strongest at the tips of the hair, causing them to repel each other and stand out. The direction of the hair is also affected by the shape and texture of the hair, as well as external factors such as humidity and the strength of the electric field. This phenomenon is a demonstration of the principles of electrostatics and can be further explored through experiments with different materials and settings on the generator.
 

FAQ: Why Does Hair Stand Up When Touching a Van der Graaf Generator?

What is the Easy VAN DER GRAAF QUESTION?

The Easy VAN DER GRAAF QUESTION is a simple version of the Van der Graaf question, which is a thought experiment in physics that explores the concept of potential energy and electric fields.

How does the Easy VAN DER GRAAF QUESTION work?

In the Easy VAN DER GRAAF QUESTION, a charged object is placed on a conducting sphere. The electric field of the charged object causes the conducting sphere to become polarized, resulting in an opposite charge on the surface of the sphere.

What is the purpose of the Easy VAN DER GRAAF QUESTION?

The Easy VAN DER GRAAF QUESTION is used to demonstrate the concept of potential energy and electric fields in a simplified way. It can also be used to illustrate the principles of electrostatic induction.

What are some real-world applications of the Easy VAN DER GRAAF QUESTION?

The Easy VAN DER GRAAF QUESTION has practical applications in various fields such as electrostatics, energy storage, and particle accelerators. It is also commonly used in educational settings to teach the concept of electric fields and potential energy.

What are some common misconceptions about the Easy VAN DER GRAAF QUESTION?

Some common misconceptions about the Easy VAN DER GRAAF QUESTION are that it only works with spheres, or that the charged object must be on the surface of the sphere. In reality, the experiment can be done with any shape of the conducting object and the charged object can be placed anywhere inside the conducting sphere.

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