A small ball with zero net charge is positively charged on one side, and equally

Question

A small ball with zero net charge is positively charged on one side, and equally negatively charged on the other side. The ball is placed near a positive point charge as shown. Would the ball be attracted toward, repelled from, or unaffected by the positive point charge? Explain Is your answer consistent with Coulomb's law? Explain Hang an uncharged metal or metal-covered ball from an insulating string. Then charge a piece of tape as in section I and bring the tape toward the ball. Describe what you observe. The situation in part A suggests a way to think about the attraction in part B between a charged piece of tape and an uncharged metal ball. Try to account for the attraction in part B. As part of your answer, draw a sketch of the charge distribution on the tape and ball both before and after they are brought near one another. Explain.

Explanation / Answer

The ball will be attracted towards the positive charge .
Even though the net charge on the ball is zero , there will be a shift in the distance between the positive and negative charge centers
Since the negative charge center is more close to the positive center, the positive charge will be attracted towards the ball
This is consistent with the Coulomb's law
The net force on the charge is the difference between the forces of the positive and negative centers of the ball .
And the force is inversely proportional to the square of the distance , the net force will not be zero
B) The metal sphere will be attracted
When the charged tape is brought near a metal ball , the charges on the ball move away or towards the metal in accordance with the charge on the tape .
The net displacement in the charge center cause the metal to attract towards the tape as described above .The metal is always attracted irrespective of which charge is created on the tape , Because the polarization on the metal is in accordance with the charge on the tape ,if it is positive ,negative charge will be generated on the opposing face of the metal

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