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

JAMB Physics 2023 55 views

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

Explanation

This physics concept involves analyzing the given values and applying relevant formulas. Work through the problem step by step using known equations and constants.

Identify what quantity needs to be found and which formula connects the given information to the answer. Substitute the values carefully, paying attention to units.

Check that your calculated answer matches one of the options provided. Understanding the underlying principle helps verify the solution makes physical sense.

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