Diagram alongside shows an uncharged insulated conductor AB, which is in electrical contact with gold leaf electroscope plate C.  A negatively charged rod is brought near the end A.  Answer the following questions:

(i)  What charge appears at A and why?

(ii)  What charges are present at B, C and D and why?

(iii) If the negatively charged rod is taken away, state your observation.

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

(i)  Positive charges appear at A. The presence of negatively charged rod, repels the electrons from end A towards end B.  As end A develops deficiency of electrons, therefore, it gets positively charged.

(ii)  (a)  No charges are present at B as the electrons drift to C.

      (b)  Negative charges are present at C, D and P because the electrons from A drift to these points.

(iii)  The gold leaves of G.L.E collapse.

Answered by  | 4th Jun, 2014, 03:23: PM

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