Question

- uC
3ucc
1. Four point charges are placed
at the corners of the square
ABCD of side 10 cm, as shown
in figure. The force on a charge
of 1 uC placed at the centre of
square is
a) 7N
b) 8N
c) 2N
d) zero
​

Answer 1

Explanation:

we know that F=9*10 to the power 9*q1 q2/r²

so by applying this formula we can get the value of force on a charge of 1 micro coulomb is 21.6N