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Chapter 14: Q8Q (page 578)

Explain briefly why repulsion is a better test for the sign of a charged object than attraction is.

Short Answer

Expert verified

Repulsion is a better test for the sign of a charged object than attraction is.

Step by step solution

01

Concept

A charged object attracts oppositely charged objects and uncharged objects also.So, when a charged object is brought near a body, if the force is attractive, the body could be oppositely charged or uncharged, which was then induced due to the charged body that was brought close to this and will have the opposite charge. But repulsionhappens between two like charges.

02

Step 2:Repulsion as a test  

So, when a charged body is brought near another body,if repulsive force is experienced, it could be sure that the body has the same type of charge as the charged body.So, repulsion is better in identifying whether a body is uncharged.

Thus, repulsion is a better test for the sign of a charged object than attraction is.

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Most popular questions from this chapter

A positive charge is located between a neutral block of plastic and a neutral block of copper (Figure 14.68). Draw the approximate charge distribution for this situation.

Which of the following could be reasonable explanations for how a piece of invisible tape gets charged? Select all that apply. (1) Protons are pulled out of nuclei in one tape and transferred to another tape. (2) Charged molecular fragments are broken off one tape and transferred to another. (3) Electrons are pulled out of molecules in one tape and transferred to another tape. (4) Neutrons are pulled out of nuclei in one tape and transferred to another tape.

Make a table showing the major differences in the electric properties of plastic, salt water, and copper. Include diagrams showing polarization by an external charge.

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Explain briefly why the attraction between a point charge and a dipole has a different distance dependence for induced dipoles (1/r5 ) than for permanent dipoles (1/r3 ). (You need not explain either situation in full detail: just explain why there is this difference in their behavior.)
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