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CBSE Class 12-science Answered

elactric charge
Asked by venkat | 23 Jul, 2013, 09:48: PM
answered-by-expert Expert Answer
Force between 2 point charges = kq1q2/r^2
 
Since, the distance is fixed. So, the maximum and minimum force will depend on q1 and q2. 
 
Now, lets assume that x fundamental charges are kept together to form 1 point charge. Then (N-x) will form the second point charge. 
 
Hence, q1*q2 = x(N-x)
 
This will have minimum at x = 2 or N-2 and maximum at x  = N/2. 
 
Hence, Fmax/Fmin = (N/2 *N/2 )/ (2*(N-2) = N^2/8(N-2)
 
 
Answered by | 26 Jul, 2013, 05:34: AM
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