Charge a insulated metal sphere with a negative charge rod

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SUMMARY

To charge an insulated metal sphere positively using a negatively charged rod, one must utilize the principle of charging by induction. When the negatively charged rod approaches the sphere without direct contact, it induces a separation of charges within the sphere. If the sphere is grounded during this process, the negative charges will flow to the ground, leaving the sphere with a net positive charge once the grounding connection is removed.

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  • Understanding of electrostatics principles
  • Familiarity with the concept of charge induction
  • Knowledge of grounding techniques in electrical systems
  • Basic comprehension of conductors and insulators
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phoebus
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This is my first question in this forum. And here it is,

How do you make an insulated metal sphere has a net positive charge with a negatively charged rod?

If the rod touches the sphere, the sphere will have negative charge. If I connect sphere to ground, bring the rod near the sphere, negative charge will go to ground, then I have a positively charged sphere?

What is your answer?

Thanks.
 
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Does your textbook say anything about "charging by induction?"
 

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