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The following picture shows a neutral conducting disc in the presence of a posit

ID: 1653510 • Letter: T

Question

The following picture shows a neutral conducting disc in the presence of a positively charged conductor. Choose which would happen to total charge of the conducting disc if it was momentarily touched by the positively charged object: a) become negatively charged b) stay neutral c) become positively charged Choose the best explanation for why the gold leaf is raised in the below picture: a) It has been touched by a negatively charged conductor. b) It has been touched by a positively charged conductor. c) There is a negatively charged object nearby. d) There is a positively charged object nearby.

Explanation / Answer

1. as the positive charge is momentarily touched with the conductor, it will leave som eof its -ve charge and become +vely charged
   so the answer is Option c) Become +vely charged
2. the gold leaf is raised when it has the same charge as the other leaf, which is +ve in this case ( shown in the figure)
   so the answer is
   b) it has been touched by a positevly charged conductor