The strength of the electric field halfway between the two charges is determined as 30,400 N/C.
How to calculate the strength of the electric field?
The strength of the electric field halfway between the two charges is calculated as follows;
E = kq/r²
where;
- k is Coulomb's constant
- q is the magnitude of the charge
- r is the distance between the charges
Halfway between the two charges = 15 cm / 2 = 7.5 cm
The strength of the electric field halfway between the two charges is calculated as;
E = k/r² (q₁ + q₂)
E = [(9 x 10⁹ ) / (0.075²) ] x (10 x 10⁻⁹ + 9 x 10⁻⁹ )
E = 30,400 N/C