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 negatively 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?

C) 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 ground connection is first broken, and THEN the rod is removed, what is the final charge of the conductor?

Explanation / Answer

A. Zero Charge

as the conductor is grounded till rod is taken away so it neutralise all the charges induce by rod.

B.) Positive charge

when negatively charged rod is brought close to a neutral isolated conductor, but it does not touch it will induce positive charge on surface of conductor facing rod.

C.)Positive charge.

here, first the earthing is closed so after ground connection the positive charge will again induce on conductor by rod.

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