What Type of Charge is Generated by Touching a Door Handle?

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In summary, the conversation discusses the type of charge that occurs when someone walks across a carpet and feels a shock when touching a door handle. It is determined that this is a charge by induction, as the person's shuffling feet induce a charge that is then discharged when they touch the door handle. There is some confusion between charge by induction and charge by contact, but it is ultimately concluded that it is charge by induction.
  • #1
stickplot
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1. Ok this is really simple but I am a little confused so here is the question what kind of charge is this charge by contact, charge polarization, or charge by inductionYou walk across a carpeted room and when you touch the door handle, you feel a shock.I assume its charge by induction because the door handle is a neutral object and it is a conductor, and all you are doing it is touching the door handle, but I am still kind of confused whether it is a charge by contact because you are touching a door handle.

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  • #2
Welcome to PF.

The induction charge is developed by your shuffling your feet across the carpet. This "induces" the charging of you such that when you come in the vicinity of the doorknob that a discharge event occurs. The reason it is induction is because the floor and your feet - without your shuffling - are not otherwise charged. For instance running a wire from the carpet to the knob won't result in current.
 
  • #3
o ok thank you for the response i understand now
 

1. What is charge?

Charge is a fundamental property of matter that describes the attraction or repulsion between particles. It is the source of electromagnetic force and plays a crucial role in the behavior of atoms and molecules, as well as larger objects.

2. What are the two types of charge?

The two types of charge are positive and negative. Positive charge is associated with protons, while negative charge is associated with electrons. These charges can interact with each other to create electrical forces.

3. How is charge measured?

Charge is measured in units called coulombs (C). The charge of a single electron is about -1.602 x 10^-19 C, while the charge of a proton is about +1.602 x 10^-19 C. The charge of an object can be measured using an instrument called an electrometer.

4. Can an object have no charge?

Yes, an object can have no charge. This is known as being electrically neutral. In an electrically neutral object, the number of protons and electrons are equal, so their charges cancel each other out.

5. What is the difference between static and current charge?

Static charge refers to the buildup of electric charge on the surface of an object, while current charge refers to the flow of electric charge through a conductor. Static charge is typically associated with stationary objects, while current charge is associated with moving electric charges.

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