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Q. 21

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 654

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Short Answer

Aflat carpet acquires a uniformly distributed charge of after you and your friends walk across it several times. A dust particle is suspended in midair just above the center of the carpet. What is the charge on the dust particle?

The charge on the dust particle is.

See the step by step solution

Step by Step Solution

Step 1: Calculation of charge density

Given,

The charge density by dividing the chargeby the area,

Step 2: Calculation of Electric field 

To calculate the electric field, multiply the charge density by the temporal permittivity constant.

Electric field,

Step 3: Calculation for charge

To calculate the charge of a dust particle, multiply the mass times gravity by the electrical field.

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