Suppose you put positive charge on an insulated metal box (actually, remove electrons from the box)....

Suppose you put positive charge on an insulated metal box (actually, remove electrons from the box). Since it is a conductor, the charges will rearrange.
- The greatest accumulation of charges will be

nowhere- the charges will be uniformly distributedon the inside, in the center of an edge on the outside, at the cornerson the outside, in the center of an edgeon the inside, at the center of a sideon the inside, at the cornerson the outside, at the center of a side

- The electric field inside the box will be

greatest in the center of the box zero everywhere non-zero, the same everywheregreatest near the center of one of the edgesgreatest near the center of one of the sidesgreatest near one of the corners

2. Suppose identical metal spheres are insulated from their surroundings and touching each other. A positive charge is brought near, but not touching sphere A, and held near to sphere A as the two spheres are separated. Now, the positive charge is removed. What charge will be left on sphere A and sphere B, respectively?

A is negative, B is positiveA is positive, B is positive A in neutral, B is neutralA is neutral, B is positiveA is positive, B is negativeA in negative, B is neutralA is negative, B is negativeA in positive, B is neutralA is neutral, B is negative

4. A pith ball is a small ball covered with a conducting metal foil. Suppose pith ball A is charged negatively.
- First, pith ball A is brought near neutral pith ball B.
- Then, the two pith balls touch and are separated.

a) Which is true of the charges on the two pith balls?

Before they touch they have no effect on each other, after they touch they have no effect on each otherBefore they touch they repel, after they touch they attract Before they touch they attract, after they touch they have no effect on each otherBefore they touch they repel, after they touch they repelBefore they touch they attract, after they touch they attractBefore they touch they have no effect on each other, after they touch they repelBefore they touch they have no effect on each other, after they touch they attractBefore they touch they attract, after they touch they repelBefore they touch they repel, after they touch they have no effect on each other

b) Before they touch, ball A is negative and ball B is positive. After they touch

A is neutral, B is positiveA is positive, B is positive A is positive, B is neutralA is negative, B is positive A is negative, B is negativeA is neutral, B is neutralA is positive, B is negativeA is negative, B is neutralA is neutral, B is negative

Help will be appreciated! Thank you!

Expert Solution

genius_generous answered 10 months ago

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