A positively charged conducting rod is touched with a neutral metallic sphere which is kept on the insulating stand, when the rod is removed the sphere will:

  1. Become positively charged
  2. Become negatively charged
  3. Remain neutral
  4. Can't say

Answer (Detailed Solution Below)

Option 1 : Become positively charged
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Detailed Solution

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CONCEPT:

Charging by conduction:

  • Charging by conduction involves the contact of a charged object to a neutral object.
  • Hence when an uncharged conductor is brought in contact with a charged conductor, the charge is shared between the two conductors, and hence the uncharged conductor gets charged.
  • In charging by conduction similar type of charge will generate on the uncharged body.

EXPLANATION:

  • Charging by conduction involves the contact of a charged object to a neutral object.
  • Hence when an uncharged conductor is brought in contact with a charged conductor, the charge is shared between the two conductors, and hence the uncharged conductor gets charged.
  • In charging by conduction similar type of charge will generate on the uncharged body.
  • So if a positively charged conducting rod is touched with a neutral metallic sphere that is kept on the insulating stand, the sphere will get positively charged. Hence, option 1 is correct.

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