For each statement select P for Positive, N for Negative, or Z for Zero charge (

Question

For each statement select P for Positive, N for Negative, or Z for Zero charge (Neutral). (If the first answer is positive, the second negative, and the third neutral (zero net charge), enter PNZ. Do not enter spaces)

A) A negatively charged rod is brought close to a neutral isolated conductor, but it does not touch. The conductor is then grounded while the rod is kept close. If the rod is first taken away, and THEN the ground connection is removed, what is the final charge of the conductor?

B) A positively charged rod is brought close to a neutral isolated conductor, but it does not touch. The conductor is then grounded while the rod is kept close. If the ground connection is first broken, and THEN the rod is removed, what is the final charge of the conductor?

C) A positively charged rod is brought close to a neutral isolated conductor, but it does not touch. The rod is then removed. What is the final charge of the conductor?

Explanation / Answer

A) Neutral

Since the ground connection is still there, all the charges move to the ground and no charge remains.

B) Negative

Positive rod keeps the negative charges in the conductor intact, thus negative.

C) Neutral

No net change is made since rod is just brought and removed. Thus neutral

Final answer: ZNZ

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