Consider three plastic balls (A, B, and C), each carrying a uniformly distribute

Question

Consider three plastic balls (A, B, and C), each carrying a uniformly distributed charge equal to either +Q, -Q or zero, and an uncharged copper ball (D). A positive test charge (T) experiences the forces shown in the figure when brought very near to the individual balls. The test charge T is strongly attracted to A, strongly repelled from B, weakly attracted to C, and strongly attracted to D.

Assume throughout this problem that the balls are brought very close together.

Part A

What is the nature of the force between balls A and B?

You did not open hints for this part.

ANSWER:

What is the nature of the force between balls A and B?

neither attractive nor repulsive

neither attractive nor repulsive

Explanation / Answer

Since T is positively charged,

With T being strongly attached to A, it makes A a "strong negative charge" due to the attachment of opposites

vice-versa, we see that B is seen as a "strong positive charge"

so a "strong negative charge" and a "strong positive charge" will...

Answer: strongly attractive

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