Question

Two positive charge which are separated by a distance of 0.3 metre each other with a force of 2.4 Newton if sum of both charges is 10 find the value separately

Answer 1

Let the charges beQ1& Q2

Q1+Q2=10

Q1=10-Q2---------(1)

F=K Q1×Q2/r^2

2.4=9×10^9×(10-Q2)×Q2/0.09

2.4×.09=9×10^9(10Q2-Q2^2)

24×9×10^3-9=9(10Q2-Q2^2)

Q^2-10Q2+24×10^-6=0

And do your self