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CBSE Class 12-science Answered

What is the force between 2 small charge spheres having charges 2×10^-7c and 3×10^-7c placed 30cm upward in air? 
Asked by 182204160003 | 30 Mar, 2019, 05:31: AM
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Coulomb's law , begin mathsize 12px style F space equals space fraction numerator q subscript 1 space q subscript 2 over denominator 4 πε subscript straight o straight r squared end fraction space equals space fraction numerator 0.2 cross times 0.3 over denominator 30 cross times 30 cross times 10 to the power of negative 4 end exponent end fraction cross times 9 cross times 10 to the power of 9 space equals space 6 cross times 10 to the power of 9 space N end style
where q1 and q2 are the charges, r is the separation distance and εo is the permitivity of free space.  [  1/(4πεo ) = 9×109  N m2 C-2 ]
Answered by Thiyagarajan K | 30 Mar, 2019, 08:55: AM

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CBSE 12-science - Physics
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