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Questions  

Proton and α - particle are put  1A  apart in Air. Mangitude of intensity of electric field due to Proton at  α  - particle is ( N/ C )

a
Zero
b
2.88×1011
c
1.44×1011
d
5.76×1011

detailed solution

Correct option is C

E=14πε0qr2      =9×109×1.6×10−19(10−10)2=1.44×1011Nc

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