A metal sphere is placed on an insulating stand. A negatively charged rod is brought close to it. If

JAMB Physics 2023 281 views
Source: JAMB · 2023

A metal sphere is placed on an insulating stand. A negatively charged rod is brought close to it. If the sphere is earthed and the rod is taken away, what will be the charge on the sphere?

  1. The sphere will have a net negative charge.
  2. The sphere will have a net positive charge. ✓
  3. The sphere will remain neutral.
  4. The sphere will become polarized

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