2 38. Two initially uncharged conductors. 1 and 2. arc mounted on insulating sta

Question

2 38. Two initially uncharged conductors. 1 and 2. arc mounted on insulating stands and are in confact, os shown above. A negatively charged rod is brought near but does not touch them. With the rod held in place, conductor 2 is moved to the right by pushing its stand. so thai the conduetors are separated. Which of the following is now true of conductor 2? (A) It is uncharged. (B) It is positively charged (C) It is negatively charged. (D) It is charged, but its sign cannot be predicted. (E) It is at the same potential that it was before the charged rod was brought near

Explanation / Answer

Because the negatively charged rod is held near conductor 1 , the electrons in the conductor are pushed away from the rod giving conductor 2 a negative charge. Once the two conductors are seperated, conductor 2 will remain negativity charged even when the rod is removed.

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