In a vacuum, two point charges with magnitudes of +1.8 nC and -1.8 nC are separated by 6 mm along the x-axis. At the halfway point of the separation distance, the electric field is _____.

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  1. 0
  2. 0.45 × 106 NC-1
  3. 1.8 × 106 NC-1
  4. 3.6 × 106 NC-1

Answer (Detailed Solution Below)

Option 4 : 3.6 × 106 NC-1
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Detailed Solution

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Given:

,

,

 ,

 

Concept:

The Electric Field is given as  

Coulomb constant, 

Explanation:

The Electric Field is given as 

Two charges are separated by 6mm along x-axis, at the halfway electric field is given by,

 

Hence, the correct answer is 

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