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MHT CET20225 Aug 2022Morning ShiftPhysicsElectrostaticsActual

Two point charges q₁ and q₂ are ' l ' distance apart. If one of the charges is doubled and the distance between them is halved, the magnitude of force becomes n times, where n is

Options

  1. A8
  2. B1
  3. C2
  4. D16

Correct answer

A. 8

Step-by-step solution

The correct option is (A) Concept: Functional dependence of Coulombic Force on charges (q₁, q₂ ) separated with distance l is given by F q₁ q₂ l^2 Therefore, if one of the charges is doubled and the distance between them is halved, the magnitude of new force F_ new 2 q₁ q₂ ( l 2 )^2 So, F_ new =8 F .

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