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A charge q1 exerts some force on a second charge q2. If a third charge q3 is bought near, the force of q1 exerted on q2:


A

decreases

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B

increases

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C

remains unchanged

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D

increases if q3 is of same sign as q1 and decreases if q3 is of opposite sign

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Solution

The correct option is C

remains unchanged


Explanations of correct option: (C)

Superposition principle:

  1. It is also known as the superposition property.
  2. It describes that, if the two or more waves in space overlap each other, then the result of the disturbance is equal to the algebraic sum of the individual disturbance.

A diagram to represent the superposition principle:

Principle of Superposition of Waves: Superposition Theorem, Examples

On the basis of the superposition principle,

The force between any two charged particles is independent of all other charges in the universe.

So, the force q1 or q2 is not affected by q3.

Therefore, the resultant force on q2 will be affected.


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