# Resistivity of play doh value. DP Physics: Optional Practical: Resistivity of Play Doh 2022-10-24

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Play-doh is a popular modeling compound that is used by children and adults alike for various art and craft projects. However, did you know that play-doh also has electrical properties that make it useful in certain applications? In particular, the resistivity of play-doh can be measured and used to understand how it behaves in different situations.

But what is resistivity, and why is it important to measure the resistivity of play-doh? Simply put, resistivity is a measure of how well a material resists the flow of electrical current. It is expressed in units of ohm-meters (Ω·m). Materials that have a high resistivity, such as rubber or plastic, are poor conductors of electricity. On the other hand, materials with a low resistivity, such as copper or aluminum, are excellent conductors of electricity.

The resistivity of play-doh can vary depending on its composition and the conditions under which it is used. For example, play-doh that is made with a higher proportion of water will have a lower resistivity than play-doh that is made with less water. Similarly, play-doh that is subjected to high temperatures or pressure will have a different resistivity than play-doh that is used at room temperature and atmospheric pressure.

So, why might someone want to measure the resistivity of play-doh? One possible application is in the field of electrical engineering, where materials with specific resistivity values are used to create resistors, which are components that are used to regulate the flow of electrical current in circuits. By understanding the resistivity of play-doh, engineers can determine if it is suitable for use in a particular application.

Another potential use for the resistivity of play-doh is in education and scientific research. For example, students in a physics or electrical engineering class might be asked to measure the resistivity of play-doh as part of an experiment or lab assignment. By conducting this type of experiment, students can learn more about the electrical properties of materials and how they can be used in practical applications.

In conclusion, the resistivity of play-doh is a property that can be measured and used to understand how it behaves in different situations. It has potential applications in fields such as electrical engineering and education, where it can be used to create resistors or as part of scientific experiments. Despite its humble beginnings as a simple modeling compound, play-doh has some interesting electrical properties that make it more than just a toy.

## Resistivity in Play

The study of electricity and magnetism is fundamental to all first-year physics courses. Ionic conduction is the opposite, and I suspect that is what you are seeing with playdoh. Any advice or help would be great. Alternatively, sign up to our sites at Play Doh is modelling clay made out of flour oil and salt, the salt content enables it to conduct electricity so it has a measurable resistance. This the estimate for your cooling rate.

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## Resistance of Playdoh ? Need Help : Physics

Day Post Mon Tue Thu Fri How to use LaTeX? Put the data into a spreadsheet and you should have a beautiful decay curve. This will introduce error in your experiment. But as shown by or data, this works for one and not for the other. Wait a minute and start taking measurements every 20 seconds until temp has reached room temp. To do this you need an estimate of the heat dissipation coefficient of the playdoh. This lab is an exciting, fun experiment that connects a new concept with a familiar childhood toy. If you are a student and wish to access these resources, ask your school to subscribe.

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## DP Physics: Optional Practical: Resistivity of Play Doh

Plug this and your initial temp into your model. The basic law is that as heat increases the resistance increases and therefore the current decreases. You need to do frequency-impedance plots to tell apart metallic from other forms of conduction. As the temperature approaches 0 o K, the resistivity approaches zero. In this experiment the resistance of a cylinder of play Doh will be measured as it is squashed between 2 metal plates. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.

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## Resitivity_with_Play

Please make an effort to engage the community rather than simply state your views and expect others to validate them. Utility companies seek to use power line materials with the largest cross sectional area to reduce transmission costs associated with smaller diameter cable. Resistivity of Play-Doh Title: Determining the Resistivity of Play-Doh Theory: Resistivity is an intrinsic property of a material. To be more specific, the resistance will decrease as the cross sectional area increases and length decreases. Maglev trains rely on superconductivity for the. Pre-prints are accepted, but moderators reserve the right to delete any posts that break the rules regarding unscientific content. Take the nat log of the data in a separate column and extract the slope.

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Developing simple electricity laboratory experiences that are open ended and inquiry based can be difficult. When the resistivity goes to zero, so does the resistance. You may be able to estimate the error using a heat dissipation law modeling the temperature as a decaying exponential with respect to time. If in doubt, use the title of the original research. While resistivity is an inherent property of a material, it is also dependent on temperature. It is a measure of the ease at which electrons can flow in a material. Nabighian Society of Exploration Geophysicists, 1987 , pp.

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The aim of Please choose a user flair using the 'edit' option next to your username above. Furthermore, you will see that resistance is directly proportional to the length of the conductor and inversely proportional to the cross sectional area. The lack of quality sources is grounds for removal at moderator discretion. Walker, Fundamentals of Physics, 9th ed. . The resulting condition is called superconductivity. Simply record the time after you heat it to find an estimate of the temperature from the model.

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Take a hunk slightly larger than a quarter in diameter, weigh it of playdoh, pop it in the microwave for a few minutes, take it out carefully and stick a thermometer in it so that the bulb is at the center of the block. We wished to create a lab experiment where the students have some control over the experimental design, data analysis is required, and students investigate the concept of resistivity as found in Halliday Resnick, and Walker. Ice baths, dry ice, and room temperature measurements do not have this severe limitation as there is no safety concern. We have also further developed the experiment to better understand how the resistivity of Play-Doh changes with time. .

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