Charging an object by Induction


 
 
Concept Explanation
 

Charging an object by Induction

Charging by induction: In charging by induction, charging is done without touching the charged body to the object that has to be charged. For example, a charged glass rod is brought close to a metal object, but does not touch it.If a charged body is brought near an uncharged body then neutral body becomes oppositely charged. We can charge any type of material body.

                  

In the figure above when a charged rod is bring closer to the neutral sphere then there occur redistribution of the charge with in the sphere. When we bring a negatively charged electrode closer to the sphere , the positive charge get accumulated in the face of the sphere facing the rod. If we remove the electrode the sphere will get uncharged again . To get a positively charged sphere the negative charge of the sphere has to be  removed by earthing.

Sample Questions
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Question : 1

When we bring a charged electrode close to a metal object, then there occurs a distribution of charge in the metal object. This process is known as _________________

Right Option : B
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Explanation
Question : 2

A positive points charge Q is brought near an isolated metal cube then:

Right Option : D
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Explanation
Question : 3

Write the following steps in sequential order to prove that like charges repel each other.

  • (A) Take two glass rods.
  • (B) Now bring these two charged rods nearer.
  • (C) Charge them by rubbing rods with a silk cloth.
  • (D) The glas rods repel each other showing that like charges rewel each other
Right Option : B
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Explanation
 
 


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