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Chapter 22: Q.6 (page 623)

A plastic balloon that has been rubbed with wool will stick to a wall. Can you conclude that the wall is charged? If so, where does the charge come from? If not, why does the balloon stick?

Short Answer

Expert verified

Different methods of charging is responsible for above situation

Step by step solution

01

It is given that  A plastic balloon that has been rubbed with wool will stick to a wall. 

This is because of charging by friction balloon and wool both gets oppositely charged.

02

now as charged balloon goes nearer to wall, charges gets induced in wall due to charging by induction.

that is charges in wall get separated as positive and negative. and always nearer end get opposite charge hence force of attraction is more pronounced compared to farther end. thus balloon sticks to wall. and wall gets charges by induction.

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Most popular questions from this chapter

Three 1.0 nC charges are placed as shown in FIGURE P22.66. Each of these charges creates an electric field E→at a point 3.0 cm in front of the middle charge.

  1. What are the three fields E1→, E2→, and E3→created by the three charges? Write your answer for each as a vector in component form.
  2. Do you think that electric fields obey a principle of superposition? That is, is there a “net field” at this point given by E→net=E1→+E2→+E3→? Use what you learned in this chapter and previously in our study of forces to argue why this is or is not true.
  3. If it is true, what is E→net?

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c. What is the ratio of the electric force to the gravitational force.

You have two small, 2.0gballs that have been given equal but opposite charges, but you don't know the magnitude of the charge. To find out, you place the balls distance dapart on a slippery horizontal surface, release them, and use a motion detector to measure the initial acceleration of one of the balls toward the other. After repeating this for several different separation distances, your data are as follows:

Use an appropriate graph of the data to determine the magnitude of the charge.

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