F =kqQ /r'2
So F1 because of charge 1c Will be k*1*1/1
Similarly F2 'll b k*1*2'3/2'2
And so on till the charge 10c
On adding all the forces we get k(1+2+3+4+5+6+7+8+9+10)
=55*9*10'9
=495*10'9
Here *represents multiplication
And 'represents exponential power
