What is the force between two small charges of 2 \times ...

CBSE Class 12 Physics 2014 Outside Delhi Set 1 Paper

Question : 3 of 30

Marks: +1, -0

What is the force between two small charges of 2×10−7C and 3×10−7C placed 30‌cm apart in air?

Solution:

F‌=‌

kq1q2

‌=‌

9×109×2×10−7×3×10−7

(30×10−2)2

‌=6×10−3N

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